Malicious PDF — malware analysis report

Static analysis result for SHA-256 60be5f76af532450…

MALICIOUS

PDF

80.9 KB Created: 2021-08-27 17:35:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 6d0af9ed6ade61938fd4d9fe46f6157d SHA-1: 9088a2045484b83bb891cc5d1e4d1f9e8a7a5f16 SHA-256: 60be5f76af532450e0351a8c5ca4a68b0af432540c7ff0f2f0847512b56c97ad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm pointing to numerous other PDF files, many hosted on compromised WordPress sites. This technique is commonly used to distribute phishing content or further malware stages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mangonebike.com/uploads/file/68353336894.pdf In PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f76ddaf3e---99363385271.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/8b328434a8935a79e053d5fb1ad67dc8/96636807730.pdfIn PDF document text
    • https://www.ewdel.cz/ckfinder/userfiles/files/zovobubikopokakoware.pdfIn PDF document text
    • http://mujuerp.com/uploads/ckeditor/files/20210627053756.pdfIn PDF document text
    • http://xpeedon.net/userfiles/file/20210810000514.pdfIn PDF document text
    • http://toshiteriyakiburien.com/uploads/files/49350272774.pdfIn PDF document text
    • http://planetamama.ru/files/file/14111520529.pdfIn PDF document text
    • https://classicandcamper.co.uk/wp-content/plugins/super-forms/uploads/php/files/dfrrvrvvhfn3oangv02ndb4l67/xazunanovojikatojipefe.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607be467463a9---31289915884.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/7fbd6782b60b2ee93d1578bc2b7458b1/nufoduwimevumopegadulowu.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16115ddb5a0f72---33808654058.pdfIn PDF document text
    • http://cbcom.fr/ressource/site-image/files/48417542784.pdfIn PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/lubamesigobixipifugurafo.pdfIn PDF document text
    • https://mbzl-pro.xyz/web/img/podborky/files/fivimalel.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/32137698979.pdfIn PDF document text
    • http://broadmoor79.com/clients/864886/File/98962854576.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/32048124628.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160fd5d0a1edd6---xisep.pdfIn PDF document text
    • http://chapelguild.com/images/usr/87647834648.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a750c6e97cf---73497111080.pdfIn PDF document text
    • http://championshipsportsrings.com/clients/23492/File/vanezolu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=columbo+butterfly+in+shades+of+greyPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B3 11188 bytes
SHA-256: 7956edb4ac7af969745939a934e48970333a1b0be267a30c5aedb0925d37fe59
font_01_sfnt_off0000ed7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7E 17576 bytes
SHA-256: 143d9d0859fd0cb32dd4767451c2d9aafd54a87acc60b7b77534440379f1d81c
font_02_sfnt_off00011b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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