Malicious PDF — malware analysis report

Static analysis result for SHA-256 4754b850a4fec032…

MALICIOUS

PDF

59.0 KB Created: 2020-11-18 18:47:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b26e01081546fc4843f18b05277e3bd0 SHA-1: 96f5c45b30c637f147b4d0cfc1661341d0459a3c SHA-256: 4754b850a4fec03278a791f112b3279a78da9453e974c5663ac1e376bfa35aac
154 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 0.8027

Heuristics 4

  • 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
  • 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://trafffi.ru/strik?utm_term=emt+books+free+download PDF link annotation
    • https://xadiditenir.weebly.com/uploads/1/3/4/7/134763486/6800037.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8749f37e67d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421473/normal_5f9d89412abc5.pdfIn PDF document text
    • https://rugalasaludazi.weebly.com/uploads/1/3/4/6/134683923/givuxodefomuru.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/tumasun/bzu_prospectus_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/50483693920.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/69303502129.pdfIn PDF document text
    • https://s3.amazonaws.com/kimoweworape/back_to_eden_health_book.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/57079498084.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/satyanarayana_biochemistry_latest_edition_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/eldritch_knight_guide_nwn2.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/janeguwined.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/bally_total_fitness_gym_membership_prices.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/journal_el_watan_archive.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/atlantis_antediluvian_world.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/10405407061.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB0D 5044 bytes
SHA-256: 8d0ec389a9513e471ea6f4247345ef63f2f4d4be0749400ab1c83b789214cf9b

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