Malicious PDF — malware analysis report

Static analysis result for SHA-256 9638ceef98770648…

MALICIOUS

PDF

103.5 KB Created: 2021-03-14 17:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aa82533c453f2840cd332c94cf99ac2 SHA-1: d43e581832bf850aece29ec7f2e7db1d0bd1509e SHA-256: 9638ceef987706481c9d48b5826ba90fc7f0b03d26073d720ceb7a9965f31d1a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable hosting services, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure for a repair manual, likely to trick users into clicking malicious links.

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://lozipotod.ru/strik?utm_term=coleman+powermate+maxa+5000+er+repair+manual
    • https://mipedurekarano.weebly.com/uploads/1/3/5/3/135321071/zamuwekede.pdf
    • https://cdn.sqhk.co/gagowuname/ghgchat/bekif.pdf
    • http://gisoboxizaza.mygamesonline.org/nuzakudelojofox.pdf
    • https://welabelodaset.weebly.com/uploads/1/3/5/3/135399274/696922.pdf
    • http://xedijama.getenjoyment.net/26841267422.pdf
    • https://tewonubipudi.weebly.com/uploads/1/3/6/0/136016370/bf21d628a25eb4e.pdf
    • https://cdn.sqhk.co/wazikunal/a0gjf21/world_of_guns_gun_disassembly_all_guns_hack.pdf
    • http://dikegebe.mygamesonline.org/80754586048.pdf
    • http://sijemogezabusa.sportsontheweb.net/laxemoxeje.pdf
    • https://bipurubozebupal.weebly.com/uploads/1/3/6/0/136082727/3252550.pdf
    • https://xadixolikiz.weebly.com/uploads/1/3/1/3/131380305/nuparexogas.pdf
    • https://zolotamazuragif.weebly.com/uploads/1/3/2/7/132712333/ribuwujalikik-wuduweladamupif-xolirixixale.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bugenerefajujus.atwebpages.com/beginning_xml_with_c_7_download.pdf
    • https://uploads.strikinglycdn.com/files/b8dd64d5-51d5-49d3-a39f-b922e376f07c/gelesatotivavidorerukuneg.pdf
    • http://megugasawixige.onlinewebshop.net/cambridge_igcse_first_language_english_coursebook_fourth_edition_answers.pdf
    • http://vegubom.atwebpages.com/irobot_roomba_s9_plus_bundle.pdf
    • https://uploads.strikinglycdn.com/files/e6d452cb-3ad6-42b5-9750-8e46a24b5328/how_to_make_jail_food_with_ramen.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013e1f.bin
95d5bca8b40db010d80646828a61e176bcf283255e0b0a59d69c1bbfa23b0308		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E1F 5120 bytes
font_01_sfnt_off00014f81.bin
c6304433ff407769f998f2ca4d2f10d6945a49d0e7fcb0e4a99cca54a94ae6c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F81 13084 bytes
font_02_sfnt_off00017a01.bin
2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17A01 16060 bytes

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