Malicious PDF — malware analysis report

Static analysis result for SHA-256 293e31fe9c8302fb…

MALICIOUS

PDF

99.8 KB Created: 2021-04-29 17:19:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e610b193d8c90e335ab430cbb972984f SHA-1: 556255b68d1739d6772cbd133245647856b2110d SHA-256: 293e31fe9c8302fbce668adf1e587adf9261584b9da4c1a967bc3e2847b8aa9d
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 0.9994

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://bologen.ru/strik?utm_term=sony+str-dn850+specifications PDF link annotation
    • http://sewakasatixori.medianewsonline.com/2431113456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373517/normal_602d971888f36.pdfIn PDF document text
    • http://nilutafejo.mypressonline.com/augmented_reality_android_tutorial.pdfIn PDF document text
    • http://tujubafi.getenjoyment.net/who_sings_behind_closed_doors_lyrics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491173/normal_606970612e45d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443344/normal_601cb40d99851.pdfIn PDF document text
    • http://gatorama.space/can_someone_fall_in_love_online1p41p.pdfIn PDF document text
    • http://deflecfcvy.best/xaderiwujitogexiwcoryr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rowesotinik.rf.gd/avatar_3d_anaglyph_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/155cb820-3f54-4007-94a1-da78ff2034b4/peguwamufikujufajajubil.pdfIn PDF document text
    • https://88bec3ce-9cdd-4818-a95b-bcf8ac49d1e7.filesusr.com/ugd/72df48_bdd73bd39619490ab0dbd970abce303d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0106692c-f105-4f55-aacc-5a5fba3040d2/diablo_2_dd.pdfIn PDF document text
    • http://zaretinigalowu.rf.gd/50047852657.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/56167017558.pdfIn PDF document text
    • http://mokimonanogi.rf.gd/cymatics_titan_free.pdfIn PDF document text
    • https://8dac4d01-2cd1-45d2-8b5f-6005f802adc9.filesusr.com/ugd/1f96ce_27464f2d925b4df293f9babaa2c91e7b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f41673cb-c739-4cd0-aab9-abd8483952f4/california_ab_60_requirements.pdfIn PDF document text
    • http://zusozokag.epizy.com/skill_set_or_skill-set.pdfIn PDF document text
    • http://todazudagupuked.epizy.com/negowusedoduvizomirojox.pdfIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_a47d07c2c395464a8002454e4ee9b2b5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/013718eb-1cde-44b4-a9dd-2bb483192fae/26043268812.pdfIn PDF document text
    • https://926da24b-d3df-4aea-ac1b-ebdf7359a9e7.filesusr.com/ugd/fef925_8021b9e3dfb84f45ab8b011f7571d1f2.pdf?index=trueIn PDF document text
    • https://43a2ba88-5de9-465b-b95f-6a4d82f2d06e.filesusr.com/ugd/dcbeda_d8a2fc190f384e31b5f081854b9d0b71.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001465f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1465F 5816 bytes
SHA-256: 3b2f421a91d123de516d0b728ce9c9d2f6ca3ff744c3eab5a4afa4690883d96e
font_01_sfnt_off00015a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A50 11672 bytes
SHA-256: 981a1ebbc8286afc506de800592f03e4529e62f73579449ff201cb76e4acf7a5

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