Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d8d84d61966e11…

MALICIOUS

PDF

119.4 KB Created: 2021-07-06 05:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 5c0dcf36dbe0304a62b5437a1572671c SHA-1: beced5d5e6a6ace73ec9e30c8f8fe93c7578a564 SHA-256: 00d8d84d61966e11c58c116773a55e4bb5cbf26b25dbd62f49321b69ed63ee4a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs pointing to compromised WordPress sites, indicating a likely phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The presence of embedded JavaScript suggests it may be used to further obfuscate the malicious links or initiate a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9267

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4ff2759dd---58162533231.pdf In PDF document text
    • http://suamayin.biz/userfiles/file/53887961268.pdfIn PDF document text
    • http://thelonerangerfanclub.com/ckfinder/userfiles/files/gilupitexidadezusiwarav.pdfIn PDF document text
    • http://seattleteriyaki3.com/uploads/files/vepunowe.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/076l5kjroshc4isbrlo9oidj50/zutilosojadulilekuzebak.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5399f1b2a---77985705877.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/60d71637ef00c274f54e33c1b0aa299d/9685369081.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/7c3cd9c7c0b7c280fc754cc33af1eadd/34330995837.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1d726d3ad6---87543070961.pdfIn PDF document text
    • https://ev-owners.jp/userfiles//files/robigi.pdfIn PDF document text
    • https://konferencii.ru/js/ckfinder/userfiles/files/20024009189.pdfIn PDF document text
    • http://ville-dammarie.com/ckfinder/userfiles/files/86495904372.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e2d7f8045a8---99468652446.pdfIn PDF document text
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/c4c86e7a356e7ee71ab6cdb340d2307a/81082658339.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160806e67d6387---75588731153.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/gikhecdeu0lmfe9aohs6ei2ue5/tejuduj.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3d9c4b5ef---bifenuzebuxidudimo.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/778cb3511f6e5746d925aa2023e3e736/puzotiderobinuj.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607aeafe6334e---xujefebidoxojaduxutep.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/uiso1a1vmaat446kb55pj093gs/felixovuxela.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5bb5b58a0a---96228197864.pdfIn PDF document text
    • http://wenxuezj.com/images/File/54450282442.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/54985674358.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd4d2e2c6e---zoloborunojosukafetazapop.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/64ff9d70tac8nipoq41eaqo712/26715390356.pdfIn PDF document text
    • http://eastcoastbiker.de/sites/default/files/file/lalite.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=conservation+of+charge+meansPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013e6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E6A 10832 bytes
SHA-256: b46624138802ed61fdbce7cf9ab70bbb894f45b5733e5a79add65a1524e8ec9a
font_01_sfnt_off0001574b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1574B 17516 bytes
SHA-256: 39338eda6762f4fc30ac1dd894fecee4bdf95641c40bfb9c653c8dac38b8e0cb
font_02_sfnt_off000171f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171F2 2868 bytes
SHA-256: 041fceccadc7caa64072c7c196630922b372c39d0317ac55e0cfdfd1b72d1cbd
font_03_sfnt_off00017d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D85 22316 bytes
SHA-256: cc832fb725a9641e8de5c8cc60d0924ab7328f2fd6e7e27be6e3614c6a4120f1
font_04_sfnt_off0001b598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B598 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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