Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e299178530066fa…

MALICIOUS

PDF

77.0 KB Created: 2021-02-26 11:49:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 065b3da755d4cb9e00cd733537eb2229 SHA-1: 6b7ece620b28561c9759d143db550240158a903e SHA-256: 6e299178530066fa09ed0b56887f4a595298432b96ca423e93d4f91e3b9732d5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document contains a large number of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The primary URL, 'https://resalured.ru/wb?keyword=what%20does%20clarion%20definition', appears to be a lure to generate traffic to these linked resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://resalured.ru/wb?keyword=what%20does%20clarion%20definition PDF link annotation
    • https://cdn.sqhk.co/wofazexej/Ygdifih/29331411491.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463010/normal_6024a3510d8d9.pdfIn PDF document text
    • https://cdn.sqhk.co/rijakobebux/3ifhbic/classcraft_student_intro_quest.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494435/normal_601a692b1eaba.pdfIn PDF document text
    • https://suzexefovewav.weebly.com/uploads/1/3/4/6/134640410/53b4863e36d.pdfIn PDF document text
    • https://cdn.sqhk.co/javomekoru/bjg7o5U/vigopiwejoguvuboxibige.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450889/normal_5febe50a54841.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470523/normal_5ff76b298af7c.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/egfrQOk/4246519541.pdfIn PDF document text
    • https://cdn.sqhk.co/komagiju/hsOjchc/wutetimejiwivida.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/Ngigdjb/zitufepexenege.pdfIn PDF document text
    • https://cdn.sqhk.co/nadizolobe/hZfOmjg/wars_of_the_roses_key_battles.pdfIn PDF document text
    • https://bopexetijajab.weebly.com/uploads/1/3/1/4/131411078/8741313.pdfIn PDF document text
    • https://cdn.sqhk.co/xadowififux/04th7E6/votasogesonifizaxikari.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/LKjaieC/63517818682.pdfIn PDF document text
    • https://jagewimaw.weebly.com/uploads/1/3/4/0/134012974/5538106.pdfIn PDF document text
    • https://cdn.sqhk.co/waxobakal/gHgjwhg/love_letters_to_kellie_website.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000eda6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA6 5124 bytes
SHA-256: cb20b89e46cb39c6b1310103d3474aaa3ac86f6c430d98fe10811dca511e3b71
font_01_sfnt_off0000ff1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1A 11884 bytes
SHA-256: 736caf88e582c43c3a7aadeb9bd785ee202d313ec473f85c9fdf114bfe7f5d78

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