Malicious PDF — malware analysis report

Static analysis result for SHA-256 f222457b2002530f…

MALICIOUS

PDF

76.2 KB Created: 2021-05-12 20:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 56e681f7f63e3f2467f95e1616eca9d7 SHA-1: d6c2e4eca7dd6a0e598cc2eb126531e8b0dee893 SHA-256: f222457b2002530f6627747e231fbf7577d23dec00f5462e37fba571569e16a1
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 0.9996

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 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://soxebez.ru/strik?utm_term=best+single+brew+k+cup+coffee+maker PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367275/normal_5feb40516aa7e.pdfIn PDF document text
    • http://about-fb-support.com/whirlpool_induction_stove_manual168g4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483836/normal_6014e4e4ec262.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449788/normal_604a05df9715f.pdfIn PDF document text
    • http://burrrhey.tech/58346447377x68ol.pdfIn PDF document text
    • http://6gusevshop.website/julusolusipovewukujifizalxdrxy.pdfIn PDF document text
    • http://kexedeziferu.sportsontheweb.net/vonorudinogoforanakefal.pdfIn PDF document text
    • http://honbiz.pro/introduction_to_commutative_algebra_atiyahblhmh.pdfIn PDF document text
    • http://wepegudefagixu.iblogger.org/zizona.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_c887d4e7b3cf457c987c2460b62d9fac.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/guvovigo/acr_requirements_for_mammography_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/formal_structure_of_periodic_system_of_elements.pdfIn PDF document text
    • https://72dfff08-f6cb-4f5d-aaac-ebe71175d6a6.filesusr.com/ugd/c268f7_cd9413158bd5466ea0d3f5bdc66a4420.pdf?index=trueIn PDF document text
    • http://nobidaponofuxul.epizy.com/12194879450.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/fegipegaf.pdfIn PDF document text
    • http://noborixujap.epizy.com/aha_stroke_guidelines_2020.pdfIn PDF document text
    • http://jitawidavez.atwebpages.com/en_nombre_de_jesus_acordes_ukulele.pdfIn PDF document text
    • http://nekelaxowe.atwebpages.com/parthasarathy_book_of_clinical_pharmacy.pdfIn PDF document text
    • https://6fd4412c-3e6e-4f21-a9af-8137ffc6c0d9.filesusr.com/ugd/03469c_ab2baef4be63484f82ea76b7f2942fbc.pdf?index=trueIn PDF document text
    • http://safedoguno.onlinewebshop.net/jabewi.pdfIn PDF document text
    • http://gixiluvigatekij.atwebpages.com/44669935193.pdfIn PDF document text
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_fcebdf9ff56d4369b6f736253e5fe447.pdf?index=trueIn 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_off0000e807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE807 5680 bytes
SHA-256: f6c152bc455c9be2f24e3ed446d6b4f7f8f9c43863be9972cf5b860e0cea46b6
font_01_sfnt_off0000fb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5D 11320 bytes
SHA-256: 154e63a4678eaccdc8d40b606161825bb3181432bd10c1bf6a266f5c10bdf1c8

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