Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0dc733afa915845…

MALICIOUS

PDF

67.0 KB Created: 2020-11-18 20:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c58a47dc7b9e2086df63ed93fc461b65 SHA-1: 2cde8ddbfefca75d7457c0afcc1c13ad200bb7e7 SHA-256: b0dc733afa91584599e88e918616c192abc6649382446fc865ed3c6a57708027
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying a 'PDF_SEO_LINK_FARM' and a specific URL pointing to 'traffset.ru'. ClamAV also detected the file as 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

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://traffset.ru/strik?utm_term=warlords+battlecry+iii PDF link annotation
    • https://kefozonijufan.weebly.com/uploads/1/3/4/6/134689321/7804bb7.pdfIn PDF document text
    • https://bajusumuke.weebly.com/uploads/1/3/2/7/132741128/87d37e8fa.pdfIn PDF document text
    • https://dupizonax.weebly.com/uploads/1/3/1/3/131380343/9445205b.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/sugaguxagu/42329620544.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd43ad6-0836-44c9-9051-b10630e5f8c3/constructing_an_equilateral_triangle_inscribed_in_a_circle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb3e55c3-b7c4-4910-9dd2-28bba8d88728/60257371793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71d57011-5440-4344-9e15-8b119e219298/xepojewazowage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/484b40b0-631e-466a-b5f0-afb1d6120216/wasoniwam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4acebf30-863f-433a-b5fa-c31b10335979/cato_from_the_hunger_games_actor.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/xanesagexopow.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/a4988_datasheet_380k.pdfIn PDF document text
    • https://s3.amazonaws.com/fasotajedag/46797152605.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/steam_siege_card_list.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_off0000c93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93F 5188 bytes
SHA-256: 9108d8ab5335e4dfac954b0c749a8095c10e1d65ab24708c3c071f66339401fc
font_01_sfnt_off0000db00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB00 10772 bytes
SHA-256: 901086fcc6cd2dba5eed03c614048fa065044360f3a636ceff41bfc8408afaf5

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