Malicious PDF — malware analysis report

Static analysis result for SHA-256 606358f4e2a620a9…

MALICIOUS

PDF

113.3 KB Created: 2021-04-02 17:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 84a4420e551daa65fa446478fa5dc450 SHA-1: e09bb3a4c28a5c447fdfcbcc673ed540340a5751 SHA-256: 606358f4e2a620a9414b0dfb4b33a53929a054ee4354c483883236e8d64aab40
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 0.9993

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://vilenefex.ru/award?keyword=body+language+signals+pdf PDF link annotation
    • http://lightsex.ru/holy_quran_download_englishulcw9.pdfIn PDF document text
    • https://ziluxofizavamo.weebly.com/uploads/1/3/6/0/136009732/woputevuruvoligogari.pdfIn PDF document text
    • http://hookup750.website/daddy_long_legs_spider_lifespanxjjfo.pdfIn PDF document text
    • https://mozipode.weebly.com/uploads/1/3/1/4/131437967/31c564c08593.pdfIn PDF document text
    • http://kolomata.ru/how_to_clean_a_black_and_decker_belgian_waffle_makerhdrxz.pdfIn PDF document text
    • https://sijetuso.weebly.com/uploads/1/3/4/4/134499475/b7565b4c23d3.pdfIn PDF document text
    • https://gujejitemisadud.weebly.com/uploads/1/3/4/3/134354005/4643013.pdfIn PDF document text
    • http://iranomics.com/bikanesatamowewawitaozzyw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478125/normal_5fdc487fe5059.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450147/normal_5fe55c4dd85b6.pdfIn PDF document text
    • http://dabopoxele.getenjoyment.net/kijotifepase.pdfIn PDF document text
    • http://tijukilebag.getenjoyment.net/can_you_use_ps3_controller_on_pc.pdfIn PDF document text
    • https://goxesepejapumew.weebly.com/uploads/1/3/4/6/134609979/josajusev.pdfIn PDF document text
    • http://shtangennstutkupitseychas.xyz/simakod8e1zd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411919/normal_5ff5ecc6d9ffd.pdfIn PDF document text
    • http://meblik.su/moves_for_mortal_kombat_xl202g0.pdfIn PDF document text
    • http://beduzevitugok.mypressonline.com/dewalt_d51844_rebuild.pdfIn PDF document text
    • http://capridigi.com/osrs_adamant_dragon_melee_guide2dzix.pdfIn PDF document text
    • http://alkim.xyz/bihar_geet_video_songqu051.pdfIn PDF document text
    • https://cdn.sqhk.co/letareximo/iboInbH/pokemon_magikarp_jump_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/woxemumi/f8hnsjd/62040815157.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/how_to_do_options_trading_on_webull.pdfIn PDF document text
    • https://cdn.sqhk.co/xivovido/LuRgeTc/3_tamil_movie_background_music_ringtone_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bebovufuvuji.myartsonline.com/dabenij.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_off00017ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17ED4 5264 bytes
SHA-256: 9136375b29429658ee9dcec257b62722e2a975b132faf9114077f0448d2994b8
font_01_sfnt_off000190e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190E7 11560 bytes
SHA-256: d9c9d4c6da5095e83bf22f04cd7765c725daa671411a8ce945e66dbf491346dd

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