Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c948adb60bb2961…

MALICIOUS

PDF

69.0 KB Created: 2020-11-26 00:19:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c42eee5d377968982b0a980cf45a360a SHA-1: b70b7a5f81ccd65d1d4ff5e5438fc791d8b5a9b2 SHA-256: 5c948adb60bb2961c2e6c533344562f44415d5bcb2921f02aa5e860e41550a8d
304 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.001 User Execution: Malicious Link

This PDF file was identified as malicious by multiple heuristics, including a critical finding for a brand-impersonation credential phishing lure targeting eBay. The document contains a mass of external links, many pointing to disposable hosting, and at least one URL, 'https://gettraff.ru/123?utm_term=great+iptv+sub+ebay', is known to lead to malicious redirector infrastructure. The primary attack pattern involves directing the user to a phishing site via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://baxojozejaxofo.weebly.com/uploads/1/3/4/5/134586757/9850777.pdf.
  • 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.
  • 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://gettraff.ru/123?utm_term=great+iptv+sub+ebay In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_5fbe3f2a2989c.pdfIn PDF document text
    • https://baxojozejaxofo.weebly.com/uploads/1/3/4/5/134586757/9850777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f9736d759bd1.pdfIn PDF document text
    • https://kenolafopufa.weebly.com/uploads/1/3/4/5/134528829/jumunusixumiv.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/pomusujijiloz.pdfIn PDF document text
    • https://xawiwewediwo.weebly.com/uploads/1/3/4/0/134017039/178459.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/408860.pdfIn PDF document text
    • https://fanaraligo.weebly.com/uploads/1/3/4/6/134620410/fiponikekem-minudodakopuver.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402000/normal_5fb4f3cde70f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460233/normal_5fb9d037ea8de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/chen_xiaowang_38_form.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/92999267731.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/voduviseveniwepizolomosaj.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD340 5112 bytes
SHA-256: 25f5a0a55530851293a68a6862ed62e57fa393cb69b1e6d601bf65c7ca40608a
font_01_sfnt_off0000e4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BB 10288 bytes
SHA-256: e21d3c4c6dce94e41c28977429ebed45b16cff4f83afd02aa7a0ab2e9ba01a17

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