Malicious PDF — malware analysis report

Static analysis result for SHA-256 92aa43542e091c71…

MALICIOUS

PDF

71.1 KB Created: 2021-02-27 06:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e6a6e92c75133c5c13e974f2cf43aecc SHA-1: ef498a174c7c54111a4a99e04772f9c8d4487626 SHA-256: 92aa43542e091c71c923ea09a73641247f998c6ac9f06979fbaf1e5cef883a0e
126 Risk Score

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://golowaki.ru/award?keyword=chrono+trigger+ds+100+walkthrough PDF link annotation
    • https://cdn.sqhk.co/pulununese/VjdHXdG/free_download_stickers_for_facebook_messenger.pdfIn PDF document text
    • http://martakkord.ru/wujijebetixew0qsnb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495037/normal_601041a938ce2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453719/normal_5fdc6ad1f2c6b.pdfIn PDF document text
    • http://fionainthefield.org/chapter_2_the_planting_of_english_america_study_guide_answersh5umb.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/uEigEgg/flight_simulator_3d_airplane_pilot_game_download.pdfIn PDF document text
    • http://cloudmarket.website/hypotenuse_leg_theorem_worksheet_doccxuc9.pdfIn PDF document text
    • https://cdn.sqhk.co/dubibuwa/ijhjjji/95842672834.pdfIn PDF document text
    • http://akmurzina.com/diserekejuf5n45.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/charismatic_leadership_booko6fv2.pdfIn PDF document text
    • https://cdn.sqhk.co/wamitavixitu/jeGhggh/mibufumigowomilidimewoton.pdfIn PDF document text
    • http://1xbets-reg.site/kannada_ambari_movie_background_music44cbv.pdfIn PDF document text
    • https://cdn.sqhk.co/pabefidinaz/hixk8jc/zanumivaxojimowigofu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379732/normal_60299fc1941c4.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/rsgcqja/indeed_job_search_in_canada.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE1 5344 bytes
SHA-256: 57c2f4c49bb219e25a2e0771c85b30b43310d67bdef32875c937360e4697bdcd
font_01_sfnt_off0000ed1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1B 10112 bytes
SHA-256: 1899f73856b83cf1a6bb3a8aa2d7e55b594959a9afd9a13e3da85f78e8bcdea7