Malicious PDF — malware analysis report

Static analysis result for SHA-256 144c4521dd15e429…

MALICIOUS

PDF

82.2 KB Created: 2021-05-26 05:54:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 006ec3d1427e02cdfbd867f709a673f4 SHA-1: 884347caa03618eeff277fe3147052c5842f70d0 SHA-256: 144c4521dd15e42915cd41f0d6ae50c634bdb4c9ed3d3f03544b0f45f2674140
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=pokemon+season+5+episode+63+in+hindi+download PDF link annotation
    • https://xuravamu.weebly.com/uploads/1/3/2/7/132740838/fd2efeb5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469849/normal_605d7bb8ebcb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453553/normal_5fe9b10d74cb5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370746/normal_5fe18c82ec6c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413975/normal_60478417b0633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369773/normal_604f12a0df671.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_6066daab9459a.pdfIn PDF document text
    • https://vugijivanapuxa.weebly.com/uploads/1/3/4/7/134742443/4376b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_6035ab0e271f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365634/normal_5ff144f65d272.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446030/normal_6031f68cc542f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471946/normal_603ad3a12ff21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472768/normal_5fdf072a93cea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459776/normal_60229964cce36.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/moduluzuxikari/mavotekubevaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/69369627983.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/apple_airport_express_2nd_generation_setup.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_off0000fe69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE69 5704 bytes
SHA-256: bf6a57cdfc55e09af89e645c60a7f9f6c2139bce335a33e7f0164b277fcc86b2
font_01_sfnt_off000111cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111CD 11848 bytes
SHA-256: d5d9cd07f420787d6344fd13dab63cb18dad2339f3879e9a8ecc548d0bf537a5

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