Malicious PDF — malware analysis report

Static analysis result for SHA-256 60db523533d00ce8…

MALICIOUS

PDF

70.8 KB Created: 2021-02-13 12:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e43ee2129a692f244d49c6827584b45e SHA-1: 108477d7ef60e6342bd802db9a3309d6e70eb954 SHA-256: 60db523533d00ce8c0357f84411f1882b3d8128419f8289c37ec3b06bb91e04b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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://maypoin.ru/123?utm_term=sister+mary+elephant+lyrics PDF link annotation
    • http://shoop-fk.ru/revagohkxxb.pdfIn PDF document text
    • http://startbastar.online/zoketuvajofubjwz9.pdfIn PDF document text
    • http://chelobaka.space/othello_movie_1995_castpo6im.pdfIn PDF document text
    • http://gravkamen.ru/675253614055jxkz.pdfIn PDF document text
    • http://precabinets.xyz/221382408513zfjw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460063/normal_601d3d71f23e9.pdfIn PDF document text
    • https://pijolonaponezu.weebly.com/uploads/1/3/4/8/134879261/tixozapuron_kukofut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374708/normal_600f8697cfa49.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485821/normal_5fe2f21aa2e29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404975/normal_5fe2cceac015e.pdfIn PDF document text
    • http://avtoshtorki.shop/45491230140wq22v.pdfIn PDF document text
    • http://lnstagramcopyrigtservice.com/buddha_amritwani_marathi_video_songyjib9.pdfIn PDF document text
    • http://natbeach.space/tujuwalojorejoruja76v8r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://womopemi.epizy.com/guide_installation_htc_vive.pdfIn PDF document text
    • http://kukatunudivolu.epizy.com/68484342411.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD850 5376 bytes
SHA-256: efc8e9b248b1c4991b59298cf4027eb9c72717cb44354241870f92112360d157
font_01_sfnt_off0000ea70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA70 10468 bytes
SHA-256: 55c03cb0f06e7935a8cd9d6c7a07f2445c10f2e40ef6e70656b1fac523f1fec2

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