Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d29b96792a3a073…

MALICIOUS

PDF

66.9 KB Created: 2020-12-19 11:16:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b2067fbe9bf663a3c560d1bbb16bd2e4 SHA-1: a28d0be1014f612c73cb7bbd4bde57a91c9fdea5 SHA-256: 3d29b96792a3a073968eab9937ad324ad5c1761473d01820ecb4a4c136135c99
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated and point to potentially malicious content, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The presence of embedded URLs and the 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicate an attempt to trick the user into downloading further malicious content, possibly an archive requiring a password.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafftec.ru/strik?utm_term=the+ritual+magic+manual+griffin PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424933/normal_5fd15f6a5b9f0.pdfIn PDF document text
    • https://rofotemajanati.weebly.com/uploads/1/3/4/4/134497193/sexuzovejadulut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385009/normal_5fd67d560101a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421782/normal_5fdc46b7e5bc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f99f4dfa865c.pdfIn PDF document text
    • https://tenasedoba.weebly.com/uploads/1/3/4/3/134333827/5843488.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/fefugige.pdfIn PDF document text
    • https://zomomawiwupid.weebly.com/uploads/1/3/4/3/134385308/0f8b8.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/sajezife/69197439882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/584303ef-3f53-4ac9-b99f-09d288a3a59a/beat_the_market_maker_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ead2adfc-7026-4e04-92a3-14ec8e66e5f1/cant_open_apk_file_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edb790cf-1e63-4460-a651-d18803938aeb/jurassic_world_evolution_population_guide.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_off0000c89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89B 5068 bytes
SHA-256: 9d041f0ab14f0167fbedffa5c82bc43f83d55283a649b2c814f172f59a6cbc51
font_01_sfnt_off0000d9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AF 10788 bytes
SHA-256: 8be33a282097ac46fbf5135c6094162c164db560436e8b809891341104ab28d7

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