Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3490219ba168ae8…

MALICIOUS

PDF

79.6 KB Created: 2021-03-10 08:48:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1f6b1e805f2a3b23cccfb3e2fac5b858 SHA-1: 11a2f5bd0978301b86347c1e996015e5d6c7a2c8 SHA-256: f3490219ba168ae88593816996d8e8918430e5a1972cc3a8b3090587d854e96d
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-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://vilenefex.ru/123?utm_term=entities+exempt+from+fatca+reporting PDF link annotation
    • http://crubr.space/zonorudeketulipozopiguuptpk.pdfIn PDF document text
    • http://shoppermarket.online/xezunokumimijo41sbz.pdfIn PDF document text
    • http://yazansoft.com/pemufapefapepinijozugiwu6zpj4.pdfIn PDF document text
    • http://naturaleone.space/the_ugliesf9tja.pdfIn PDF document text
    • http://levelupguild.com/docker_machine_for_windows72qz4.pdfIn PDF document text
    • http://martans.space/fujerumad2gxxo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411918/normal_60055814a9f52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_603f1ed2148af.pdfIn PDF document text
    • http://mynasert.online/tulataribumixotiradegalulqrg.pdfIn PDF document text
    • http://poniwipojoxowo.22web.org/maxazujekunar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_600b3fa75f349.pdfIn PDF document text
    • http://wexypay.icu/life_fitness_x3-5_elliptical_cross_trainer2btsv.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/fafuzusorusaro.pdfIn PDF document text
    • http://tunewejewuz.mypressonline.com/stop_saying_youre_fine_mel_robbins.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6d5fec37-5936-4ae8-8938-03a86e982f09.filesusr.com/ugd/d4da64_2d7611df60684acbaaa03ad884b6904d.pdf?index=trueIn PDF document text
    • https://469ee322-798e-4c1d-9571-af6764901f97.filesusr.com/ugd/57169b_44c36276a150492b8c68564b6c5dfda1.pdf?index=trueIn PDF document text
    • https://7b9449e5-51e9-4a7e-81f5-8587c42320f9.filesusr.com/ugd/571bad_0ddafda65d394456bb2faa4d0099aaff.pdf?index=trueIn PDF document text
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_b33bc0df96c14344b7604b4cef27cbfc.pdf?index=trueIn PDF document text
    • http://magotabitujotu.rf.gd/kazuwisowifivudide.pdfIn PDF document text
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_2501ac4a121746eabba3d8b0608fc039.pdf?index=trueIn PDF document text
    • http://suwuriru.onlinewebshop.net/how_to_get_logical_thinking.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_off0000fb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB05 5328 bytes
SHA-256: 7b2d17bf22f0d0bfb7d79029603be5103649d82bbb0ef3e9e979ebc81f08e4eb
font_01_sfnt_off00010d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1A 10532 bytes
SHA-256: 2d4016c5df6f6e3976e7baee2fb9a8b4a95cebfd3ede4ba55809cfc4d0a1d10e

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