Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b6f9e986eb7bf46…

MALICIOUS

PDF

80.1 KB Created: 2021-04-06 23:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: aec0c38a7607f3d5b1a9c31d6bd23bd0 SHA-1: 314b18d8508cdb8c1b2642f38881aadffeb0e44d SHA-256: 6b6f9e986eb7bf465b6800327ee1070e618515d569e68c356f39941f828f9f0f
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://xajibur.ru/strik?utm_term=quadrafire+mt+vernon+insert+for+sale PDF link annotation
    • http://mojadejazisapa.sportsontheweb.net/jotul_f_600_review.pdfIn PDF document text
    • http://gagogepatajebe.medianewsonline.com/taraxes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369651/normal_5fe43a0232791.pdfIn PDF document text
    • http://wumorumomu.22web.org/293943224.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450048/normal_60533ad82cb17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451927/normal_60288685d9a2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_5fd92388ca33b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500882/normal_60125966306d0.pdfIn PDF document text
    • http://linodogeb.scienceontheweb.net/idiom_dictionary_free_download_english_to_sinhala.pdfIn PDF document text
    • http://ninuxalezopo.getenjoyment.net/paketikiz.pdfIn PDF document text
    • http://fusekimutoxi.sportsontheweb.net/bacteriologia_clinica.pdfIn PDF document text
    • http://volalagokiva.sportsontheweb.net/firewood_shed_plans.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8546b567-499d-44cb-812b-f4cb210fa0cc.filesusr.com/ugd/1f0b74_c250393e2a664b3fbf34d9c676b779c1.pdf?index=trueIn PDF document text
    • http://puwekaxaxowiza.epizy.com/98079837325.pdfIn PDF document text
    • http://wifofevowogak.onlinewebshop.net/53210306985.pdfIn PDF document text
    • https://90138cf2-752b-46b9-a396-1872e0473e42.filesusr.com/ugd/02203e_3a5f9400e87445eca005765b6545b9d3.pdf?index=trueIn PDF document text
    • https://507f79ed-2408-4027-b124-45ed49bded7d.filesusr.com/ugd/2de61b_d041b28143154842923a4a4a9ffa7eb5.pdf?index=trueIn PDF document text
    • https://78e27e65-9996-4239-a63d-7a21722db537.filesusr.com/ugd/03f576_66569d825a8046f79885d0d524277f60.pdf?index=trueIn PDF document text
    • http://wawuzir.epizy.com/shiva_bhakti_songs_in_telugu_free.pdfIn PDF document text
    • http://sifebitufol.onlinewebshop.net/36201620641.pdfIn PDF document text
    • http://peburameg.epizy.com/tv_choice_competitions_answers.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_off0000fb92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB92 5176 bytes
SHA-256: decafbb40b1d25b731610589672a7cec6ee4d76016240b84d69a80463d1eb4a6
font_01_sfnt_off00010d1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D1D 11236 bytes
SHA-256: 8f806b3655e637bdf0e4038c6fc78254e7bd07aabf6c239d35f300b3abccea34

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