Malicious PDF — malware analysis report

Static analysis result for SHA-256 e466a673d25790b2…

MALICIOUS

PDF

74.4 KB Created: 2021-03-30 19:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2414e8509ff9cf292b1b8282aa906041 SHA-1: b93c64617ea0f0072469ea466edaaa1f1dec86e7 SHA-256: e466a673d25790b2bb4e415d90a00a3cf1e67c697b22df3f6deb4f53c89402c8
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 0.9998

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://ponafet.ru/strik?utm_term=2003+polaris+sportsman+400+weight PDF link annotation
    • https://sitegevom.weebly.com/uploads/1/3/4/6/134664280/tozebog_lejadinemo.pdfIn PDF document text
    • http://sesalon.xyz/fojapuroxiptxcnj.pdfIn PDF document text
    • http://idealslimitalia-official.site/can_i_get_my_georgia_drivers_license_onlinep0klk.pdfIn PDF document text
    • http://beliyden.xyz/what_is_bond_market_in_hindi1p4nv.pdfIn PDF document text
    • http://dokumenty-kiev.online/mofiriranadunemekukeuhi31.pdfIn PDF document text
    • http://nesobaka9.xyz/rdr2_companion_glitch9c154.pdfIn PDF document text
    • http://storeyou.store/gakusamatijobengpwtu.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/0247582b6aca.pdfIn PDF document text
    • http://vefavirona.22web.org/wiwitolosagovasekebewa.pdfIn PDF document text
    • http://about-central.com/loxonesadoxitulupisobuwbocid.pdfIn PDF document text
    • http://zenurosaxaniz.22web.org/58205606274.pdfIn PDF document text
    • http://in-arenas.com/3288841674wbvy5.pdfIn PDF document text
    • http://libralab.digital/brightsign_xt1143_video_formatdjzz3.pdfIn PDF document text
    • http://autokenn.com/30905557520ohj9f.pdfIn PDF document text
    • https://walowopus.weebly.com/uploads/1/3/5/2/135295279/a36fd4cfe.pdfIn PDF document text
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/ac0d8c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xarujusezofa.epizy.com/wezetokurof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49ed965f-3b64-4bce-a4e0-2a0a3ef89fbb/sig_sauer_p226_leather_pancake_holster.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22f979d1-f41c-41e2-9d77-2cd65b07ac36/average_starting_salary_for_supply_chain_management_majors.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE540 5756 bytes
SHA-256: 37241c58b4ba04f45ca1a4c27bdeb52b85f05412d6305ffadbf8c69491cc2a5a
font_01_sfnt_off0000f8c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C3 10580 bytes
SHA-256: 77a4870ff4a2e7ce16a791623e8ce4c804dc9926488849f20ac72297fd8249fa

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