Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed648242bda1170…

MALICIOUS

PDF

81.3 KB Created: 2021-09-07 02:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 5a5b50738fa39e86da9e973eb20c0e0e SHA-1: 2114c32de792a7ecb47aaf37f34883b359939ab3 SHA-256: eed648242bda1170e26f345db35f8fd97fecd6567d74859a753c8f3ba715411f
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing to numerous URLs, many hosted on compromised CMS platforms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. No scripts were extracted, but the structure and URL patterns are consistent with a malicious link distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 http://doanekeyes.com/userfiles/docs/vesazobabaweporago.pdf In PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608ac02df0c76---44596083958.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/hnjckm0j4gtaasv99eu7pvo16k/2935728439.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/kelemobatilofovasiwe.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/a0b00b36893d29d4a3c2f644e5aca60b/81119737677.pdfIn PDF document text
    • https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/fetaze.pdfIn PDF document text
    • http://sarlampa.ru/upload_picture/fuvofuboxi.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/32298588409.pdfIn PDF document text
    • https://honghow.com/ckfinder/userfiles/files/wovabu.pdfIn PDF document text
    • http://terminsk.by/pics/files/10316453088.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a577622c344---satorejakotinunanezu.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/8956cc8ab6f9f4df4dfeb07ab7c4fdac/zaboponebol.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/ditubavovifinoz.pdfIn PDF document text
    • http://splhardware.com/UploadFile/file/2021082208264473499.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/e40f76dfba5960cd258fe14a2cd826c7/76320271911.pdfIn PDF document text
    • http://marty-triple-m.ch/inhalt/files/lalidifavasubezef.pdfIn PDF document text
    • http://sujitonweb.com/userfiles/files/81572384767.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/jplh1kgk49vnedk11e1io9g7vh/70086196591.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c547816e1d2---95906830696.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/62bea091912d699b5a1295d292f8432e/30846287843.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/31172304017.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160afb70203832---29068518334.pdfIn PDF document text
    • https://taxiporec.top/wp-content/plugins/super-forms/uploads/php/files/ul94q4m3r1lvot61qp6jq8cbgj/vesoranefifoxetogut.pdfIn PDF document text
    • http://meruzhankhachatryan.com/app/webroot/files/file/17344205134.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=non+cash+contributions+worksheetPDF 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_off0000d9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FA 10676 bytes
SHA-256: 32834ecb0025e8e9e5fcf23ad21a89c11b66a81f3be0a618a9d8f9afe8162870
font_01_sfnt_off0000f282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF282 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A94 17348 bytes
SHA-256: fe37986e22a9c54ed4a3cc426acf93b4e89ee78b61af5e28c53e575430a0c511