Malicious PDF — malware analysis report

Static analysis result for SHA-256 e691b8a29ddece58…

MALICIOUS

PDF

74.2 KB Created: 2021-04-05 22:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6edced2b4ef7d29a13c3b766840dbee0 SHA-1: abcb579dc44ddea0e8ff75ff049721a955cb9c55 SHA-256: e691b8a29ddece58c6a0e025717fb367b881b028843c459eafe26b5c4f02a147
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 http://kvadro63.ru/samsung_galaxy_tab_4_7.0_keyboard_casejjb7j.pdf In PDF document text
    • http://pocki.top/what_is_in_mcdonalds_breakfast_sausageuajjf.pdfIn PDF document text
    • http://proita.fun/xanutsns3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374840/normal_5ff967903f30c.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/bggtibt/zozidozitaturu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376621/normal_6040113972945.pdfIn PDF document text
    • http://iglivesupportteam.com/what_is_a_shaker_mechanical_penciltrmhv.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/mechanical_engineering_degree_california6anba.pdfIn PDF document text
    • http://astropsychology.website/84567659810zsa4e.pdfIn PDF document text
    • http://nofovukad.iblogger.org/56948166166.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvuwoki/thdhdae/foxwing_awning_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/dasekizob/jd5nBTc/fojuro.pdfIn PDF document text
    • http://jobauthor.online/9832838463ojgp0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421641/normal_605eee2d201bc.pdfIn PDF document text
    • https://cdn.sqhk.co/lotivadafe/eibTtbt/monster_hair_salon_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/vAIYpVcV8Aw/wb?keyword=how%20much%20does%20it%20cost%20to%20create%20your%20own%20makeup%20linePDF link annotation
    • http://sobogasitizi.epizy.com/suvogomiguposunepipotoxik.pdfIn PDF document text
    • http://tepaduvofevog.rf.gd/cadsofttools_to_cad.pdfIn PDF document text
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_35227b787ac845829d64f0209ce36f5d.pdf?index=trueIn PDF document text
    • https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_2721947d8ebb417caac5375cea884daa.pdf?index=trueIn PDF document text
    • https://42e65457-ec34-4553-8979-78b6e302f774.filesusr.com/ugd/f1976d_15a6c7c37e234b8e8a801ff6c91d4465.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_off0000e11f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11F 5532 bytes
SHA-256: 350eedd53edaf6e793ea6f88bd4278b8a0c8911654cbc1d1409a5cb7825fb823
font_01_sfnt_off0000f3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D8 11836 bytes
SHA-256: b1be21dc66fcfa533a11d7d0c157b4ff66622dbe92a8355f2132580915f4a9ee

Open this report in the interactive analyzer, or submit your own file for analysis.