Malicious PDF — malware analysis report

Static analysis result for SHA-256 133a7e081644dded…

MALICIOUS

PDF

66.8 KB Created: 2021-03-10 01:15:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8cdd88d845c3710f900a2c1d8f8b2719 SHA-1: 4fd7fa17a7dc9a4d6d7e06cc392f41e96e7c4c8c SHA-256: 133a7e081644dded0541a25c4856e51a2b1e844012a11d254c44d2dfc671548f
124 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 0.6810

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/award?keyword=pathophysiology+of+diabetes+mellitus+pdf+2020 PDF link annotation
    • http://fesabip.iblogger.org/coliform_in_frozen_food.pdfIn PDF document text
    • http://ejqy.com/72974503980k5sbn.pdfIn PDF document text
    • https://simejozegedofu.weebly.com/uploads/1/3/4/3/134359486/vexapokibowuli.pdfIn PDF document text
    • http://bilkaita.space/python_tutorial_with_exampleszx3t0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387035/normal_6028fe90e805e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375525/normal_604689167b15c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387698/normal_5fda30a7a8941.pdfIn PDF document text
    • http://j3vnci4.xyz/458319756463svxt.pdfIn PDF document text
    • https://reratuzofi.weebly.com/uploads/1/3/5/3/135346135/9bed9c4.pdfIn PDF document text
    • https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/7319400.pdfIn PDF document text
    • http://sentytld.online/fuvojabopudowupulidifdh7u.pdfIn PDF document text
    • https://dosogomufafana.weebly.com/uploads/1/3/2/6/132696174/tudesujusato-kasew.pdfIn PDF document text
    • https://viwitilabepimep.weebly.com/uploads/1/3/2/6/132695477/pevetatibeze-fikazixemef-jujom-redakamagu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465389/normal_601f859ab2f47.pdfIn PDF document text
    • http://hardcreditcheck.info/what_are_social_issues_in_usawr2z1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368223/normal_5fc764bc0a6b6.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/fajujiju/why_is_my_hp_sprocket_not_printing_the_picture.pdfIn PDF document text
    • http://wuwedutukuw.epizy.com/divisibility_worksheet_for_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/c_forward_declare_typedef_template.pdfIn PDF document text
    • http://bebewijelukisa.epizy.com/genie_pro_screw_drive_cm8600ic_a_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/impossible_quiz_2_answers_12.pdfIn PDF document text
    • http://xalatirasu.rf.gd/lagu_blackpink_whistle_acoustic_version.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_off0000fc8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8A 5876 bytes
SHA-256: e5c1f695814d6b04d82a58b64351444966a5a5a0b419246ac2960f0afeeabed0

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