Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e83a89103f80a49…

MALICIOUS

PDF

79.6 KB Created: 2020-12-05 16:57:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b0a3a849bd69acd2b687f7edeabf44df SHA-1: d2bfd846b9dbc8309fe1cbde7f28fbcc308c377e SHA-256: 0e83a89103f80a493a0d6fcbe0596c51923bfd83404adba7750ddc0940721c1d
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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/strik?utm_term=the+crucible+act+2+summary+sparknotes In PDF document text
    • https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/de40c90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383687/normal_5fcb5aed1b47c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365621/normal_5f8748c5affe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387419/normal_5f96699004546.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474999/normal_5fb5cdcd6f4fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450728/normal_5fc0cf530ea0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc114532bbd74065807882e/t/5fc63abd4f98375720b2fe5e/1606826686387/destiny_child_defense_war_tips.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf2fe9d104e5f152ce628/1606218495816/wikuwuwoxopukino.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe7e212facd59cea75dab/t/5fc35c8808845d0924f4940d/1606638730455/gexomupemegowidanim.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf184f8cdb769c6a8642e/1606283652678/39435880380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd5ed6f-8808-4c74-b789-9db0d79b060f/dC3BCzgC3BCn_doC49Frusal_hareket_sorularC4B1_C3A7C3B6zC3BCmlC3BC.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_off0000fb2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2F 5560 bytes
SHA-256: 495039d9162d75ec50753dc887b26d4de1c2f3861beb16753b10a4379b51f166
font_01_sfnt_off00010df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF7 10504 bytes
SHA-256: 3b05d3327d8de89c4d4d2946ed4f878452fbf7174e5c358b7d5234070cf345e1

Open this report in the interactive analyzer, or submit your own file for analysis.