Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb122a1f6d56a15…

MALICIOUS

PDF

77.3 KB Created: 2021-06-25 07:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 4d34fa33ea735491d824568265067404 SHA-1: 2eb597a875bae8eabf493ba5f8e1a5c9f00937bd SHA-256: bdb122a1f6d56a1530ea773639eef8833bdd3c1a90c1c2068d1783cacb92e422
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. The document body suggests a lure related to an 'Ikea diskmaskin manual', and numerous URLs point to compromised WordPress sites and other potentially malicious domains, likely serving as download locations for further payloads. The presence of external URI links and link farms on disposable hosting further supports a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pixomot.ru/uplcv?utm_term=ikea+diskmaskin+manual PDF link annotation
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/0d03a1076a6c52796a15b8bd82973a3a/misozisinatuzumuro.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/a93cd577887e7aa9ccf40e0c3745702a/zirewej.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853b5b384db---mixilogatixumesosi.pdfIn PDF document text
    • http://nanoscopy.ru/uploads/files/63303694417.pdfIn PDF document text
    • http://penzionnakrizankach.cz/ckfinder/userfiles/files/gavubepopasupidunav.pdfIn PDF document text
    • http://worldwidefilipinoalliance.com/uploadedFiles/files/vosumetozugatorakowudewo.pdfIn PDF document text
    • https://premiumtrade.ro/ckfinder/userfiles/files/pepidex.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/36087940649.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/030416176912.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/1ee5b5c0f4e5b45b4420532eca1148d0/9909678637.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/srg9rld4ngh760i1ajoh5k8n16/fuxikesaxuvaginafesurinu.pdfIn PDF document text
    • https://laps.pl/userfiles/file/25298507930.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092511654105---12846794251.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16080d0c6bce63---42654081520.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/bunefanoxekesul.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/e8329cf3b409e4f48e9b8622bdc1c759/31670683147.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE389 4568 bytes
SHA-256: 3ea42eade3433b213c56eed0658b770ed1cc4509cb9df9c952e306586380ba6e
font_01_sfnt_off0000f2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E3 12136 bytes
SHA-256: 9086c7946a844aea7dae68eeca420701e13e39b699644f1a0c464750e7d66a9a
font_02_sfnt_off00011a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A42 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176