Malicious PDF — malware analysis report

Static analysis result for SHA-256 769d2a60fae565f2…

MALICIOUS

PDF

87.2 KB Created: 2021-07-03 11:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: b1f460f8d2fdd1f2bd15b34cda5d1b3b SHA-1: 8567eb7037bc8bed6bcb802f5cc18a013ec14929 SHA-256: 769d2a60fae565f2015fee213f174d080cd082d221c2482ca9f7a472d357d785
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm designed to distribute malicious content or manipulate search engine results. The document body is heavily obfuscated and unreadable, providing no direct user-facing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • 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.
  • 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://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c394c169dfb---46409854510.pdf In PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b0829be1d5d---radazewomozu.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/xiweji.pdfIn PDF document text
    • https://machinex-machines.com/UserFiles/File/raxogasikaluxozege.pdfIn PDF document text
    • https://frontlinetherapist.com/wp-content/plugins/super-forms/uploads/php/files/594b01b0fd0f50b93f450aebc61a24b7/72216298645.pdfIn PDF document text
    • http://mishelik.ru/userfiles/file/lajaxose.pdfIn PDF document text
    • http://dfh-consulting.com/userfiles/file/mibufelesege.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608150a8b5025---21044104763.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/cpk77e6k0aqhhiej3bjoh3e1l6/mewuse.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c5147e727a3---mubodisi.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/kodidiwuweluxupasexuzuxu.pdfIn PDF document text
    • https://proektasis.gr/admin/spaw2/uploads/files/77707286003.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d081187e01---xexiwakegule.pdfIn PDF document text
    • http://thaimassagemodel.com/ckfinder/userfiles/files/11324386545.pdfIn PDF document text
    • http://cbgnfinance.com/userfiles/file/79637777972.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a90c7d13---38127532058.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/bab8a16e55cf56cdcd50911b4c0f837b/99100764778.pdfIn PDF document text
    • http://dobre-jaja.com/Upload/file/47545281397.pdfIn PDF document text
    • http://3bbb.fr/ckeditor/upload/files/fifegarilabekusem.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608777b519c7b---baxeruxotono.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/4d00dbe06d71a2f7fd99cb47c0a605c7/70068326244.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdeb84a1a0---28316676616.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/54393299225.pdfIn PDF document text
    • https://scalper.ir/data/files/file/73964047380.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=san+onofre+trails+campingPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f00d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF00D 10896 bytes
SHA-256: 3117941cf97e7d3f434a4ebcbdf4f8bb838875a8484ededf645e244dd2e9d84c
font_01_sfnt_off0001093b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093B 17180 bytes
SHA-256: ca7aac66b3905d82db1b4690e04dcd7717f4bdd0433687bde0087b37d80f2a45
font_02_sfnt_off00013648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13648 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.