Malicious PDF — malware analysis report

Static analysis result for SHA-256 294c40841fd07ff1…

MALICIOUS

PDF

68.6 KB Created: 2020-12-20 08:26:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: bc49a378dd29e34fe7dbf5acaae793e0 SHA-1: ac8f8a057247579620fa733e7b056049f653a94b SHA-256: 294c40841fd07ff16d0c304c4402097b4751d3114779058b3cda4c8b1f5df57c
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or redirection mechanism to malicious sites. The document body, though heavily obfuscated, appears to be a lure related to search terms, directing users to external URLs.

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://trafficel.ru/wb?keyword=guilty%20pleasure%20meaning%20in%20bengali PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480897/normal_5fc48dc238ba9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_5fd113741c4f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f8f54127b2f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422638/normal_5f9c3662201c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f8b39c11f400.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366676/normal_5fade3d517ab2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_5fd654b7ad1d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384828/normal_5f9674827986a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469631/normal_5fbd8906c6ac0.pdfIn PDF document text
    • https://folesatabija.weebly.com/uploads/1/3/4/4/134441350/govujidiken_bijigete_referuxolovajo_robet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381547/normal_5fc7c03615dcb.pdfIn PDF document text
    • https://bebejumupetokox.weebly.com/uploads/1/3/4/5/134513190/e897bccc6.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/vonuxagupeduze/numajinelimojate.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/46228866145.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5C 5412 bytes
SHA-256: d6018a494e2abeb3b91f97ee3a5616534bb285e80efc9494f0ac6c53e6d71da8
font_01_sfnt_off0000e1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BC 10824 bytes
SHA-256: d027d1c777b4e92d2025c6cd281bf2adbeba55bb9d7f9cc54a92a4607c296758

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