Malicious PDF — malware analysis report

Static analysis result for SHA-256 24349a1142d6f76b…

MALICIOUS

PDF

73.7 KB Created: 2021-03-17 17:58:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c925189db159557ee68db6fd72a92d36 SHA-1: 8517e93e89450c91a0b91c91b0dde263c4145831 SHA-256: 24349a1142d6f76b9c1a60ac3fa745bff3354c0679908c3acede69e06a7c9ac1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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 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
  • 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://jacksth.ru/wix?keyword=core+connections+course+1+chapter+5+answers PDF link annotation
    • https://polatubogo.weebly.com/uploads/1/3/4/5/134598163/verapezumikef-namez-zozigopop-kilidum.pdfIn PDF document text
    • https://bawimivumo.weebly.com/uploads/1/3/4/6/134609907/fimepoxefa.pdfIn PDF document text
    • http://dodemawaj.iblogger.org/cours_loi_binomiale_1ere_s.pdfIn PDF document text
    • https://nonaparipito.weebly.com/uploads/1/3/4/2/134265999/fogali.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500201/normal_60019c7a0d839.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/xoEieOV/gmda_full_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418968/normal_604896c03982c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366633/normal_5feb15688c30d.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/hhjhSM3/army_basic_training_fitness_preparation.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/ZXgcTha/word_champs_on_facebook.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503214/normal_603927cae9a85.pdfIn PDF document text
    • https://xixasoxi.weebly.com/uploads/1/3/5/3/135324484/417874.pdfIn PDF document text
    • https://cdn.sqhk.co/gubujurit/zheQiif/pooper_scooper_for_dogs.pdfIn PDF document text
    • https://nojinogexosop.weebly.com/uploads/1/3/4/6/134695112/zagatodugoki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489428/normal_5ff8a45f3c339.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tikobonojaxax.epizy.com/password_checkup_chrome_extension_app.pdfIn PDF document text
    • http://nefaped.epizy.com/93453164373.pdfIn PDF document text
    • http://xojesenokok.epizy.com/78566768337.pdfIn PDF document text
    • http://fizumarasigok.epizy.com/togugulanepozozuxosi.pdfIn PDF document text
    • http://gafomawonerif.rf.gd/the_righteous_brothers_songs_free.pdfIn PDF document text
    • http://gifagedopodub.epizy.com/kizariwelenukijakar.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_off0000e162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE162 5164 bytes
SHA-256: 68701897e2b84681ea8b511a5bb4aabe7a25d66cbc1dc1813b9624af861b78a7
font_01_sfnt_off0000f306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF306 11236 bytes
SHA-256: e35b8f2a0a6e0d2a224854f61cb6ee0b7b95455aa8e9e026308597ffadce8acb

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