Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ac25765ac1b3e6…

MALICIOUS

PDF

76.7 KB Created: 2021-02-22 20:53:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b36be7c1da032338783b43b0d6876895 SHA-1: c9579e3685f80e8d6de949b8aa204aa3646c6295 SHA-256: a8ac25765ac1b3e6499f53894af90c28c4b2651557cd0b1e89ab8c98404ebb40
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wb?keyword=philips%20bodygroom%203000%20vs%207000 PDF link annotation
    • https://cdn.sqhk.co/tazuxalana/eoCtJem/savasaretogek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377931/normal_6030cb16db35e.pdfIn PDF document text
    • https://naruvemekojesez.weebly.com/uploads/1/3/4/6/134685524/taxojagos_jurapolazapivad_tiruwobixoja.pdfIn PDF document text
    • https://gileledera.weebly.com/uploads/1/3/0/8/130874536/roxanesuzabufukisoke.pdfIn PDF document text
    • https://rigopodi.weebly.com/uploads/1/3/4/3/134307943/c25417153.pdfIn PDF document text
    • https://fotijaxak.weebly.com/uploads/1/3/4/1/134108731/funararujasanaraji.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/sasunewolumekafipon.pdfIn PDF document text
    • https://cdn.sqhk.co/tibapopedeka/iiihcih/zefekopadudunas.pdfIn PDF document text
    • https://mipixapotorifa.weebly.com/uploads/1/3/0/9/130969355/390d05b.pdfIn PDF document text
    • https://cdn.sqhk.co/roxigeve/jfigDic/54024737892.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/pukudutus.pdfIn PDF document text
    • https://xufetujada.weebly.com/uploads/1/3/4/7/134745175/mujisonefa_jasagizok_wosovalij.pdfIn PDF document text
    • https://cdn.sqhk.co/ravawiku/AggLhfx/60264493916.pdfIn PDF document text
    • https://cdn.sqhk.co/kemivabesu/jiXibgj/how_to_setup_wd_my_cloud_storage_device.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/hpu_ba_final_date_sheet_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/baal_veer_episode_1109_3gp.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/86265650015.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/29275732719.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_off0000ee59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE59 5852 bytes
SHA-256: 3abc4cef96e985db6b6da3fcdb6ce6beafd63a90339f7ba72b7d429f15d5078d
font_01_sfnt_off0001022b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022B 10476 bytes
SHA-256: 22998c417a77c49484cf9ebf9190f305a15984de37331b845fd22521dac5b080

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