Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d893e6e7b00585…

MALICIOUS

PDF

82.8 KB Created: 2021-05-29 03:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 018f32b32b715600b69e0dbbda1386bc SHA-1: 1efdf164e5436882f822e9ec9e26983f68fc0e8b SHA-256: 70d893e6e7b0058595b5c89e4ba9f2ba56fd471f12277775b4d6250bb147824d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9967

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://xezojetit.ru/strik?utm_term=how+to+remove+duplicates+google+sheets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491159/normal_6045ea1dddcaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462694/normal_602bed40524c9.pdfIn PDF document text
    • https://sarurudadolixo.weebly.com/uploads/1/3/4/6/134644817/gejuzomemutepaxova.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376371/normal_605f5ea5d2f84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493920/normal_605d11a831efc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486374/normal_5ff094661cf38.pdfIn PDF document text
    • https://vevumugenewasu.weebly.com/uploads/1/3/0/7/130776279/91ce63270df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382771/normal_60673df81fb65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368996/normal_5fe3d6dbdd17f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445871/normal_5feb97d13e271.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379602/normal_60411c342993e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393016/normal_60417baf6330d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_601e64064630c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464724/normal_6048e930999c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457848/normal_600b94c1e9bd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470835/normal_5fc7a784d19ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386606/normal_60674b8c24051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450042/normal_604aaa9ab7557.pdfIn PDF document text
    • https://lijupumo.weebly.com/uploads/1/3/4/4/134496400/rawuvapigeg-vujalitukimav-zonug-baxefe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385012/normal_5fc66f1a5e3d2.pdfIn PDF document text
    • https://gedobelega.weebly.com/uploads/1/3/4/3/134375191/jolonetiwenas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390999/normal_60437e7a3d628.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a261fdf-25de-4f03-9cbe-47f1eef4d721/preposition_quiz_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b67d1f5-f9b4-41cc-8782-85bbc3357bc2/4143573070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13fa4ee6-bcb2-4529-86f4-9124ac08caf2/buwebevoliminav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93248908-8ed7-4051-88e6-e730083a4071/fekagukojuderopez.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_off000101f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F9 5600 bytes
SHA-256: efe982156ec919ae4ed10aff070a0427fd9a9688e9284ed5ba07826dd0d3ae7c
font_01_sfnt_off000114e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114E7 11468 bytes
SHA-256: df896084bac0b83d2df831032e6b71ec0af67823e6a8a8df43f88a4a157b8852

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