Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fec91000dbb4366…

MALICIOUS

PDF

71.3 KB Created: 2021-03-05 17:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a42172fcf6b1c0ced523bc8aedb4d7c0 SHA-1: c43afd25e5ea7c206543a7578df0f8238b9bdf4c SHA-256: 2fec91000dbb436678021ee42f4535ab994dc03ae5eb1ad2fdfe93bbfa99a51c
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://zajinet.ru/wix?keyword=ft991a+mars+mod PDF link annotation
    • https://jedawakebikota.weebly.com/uploads/1/3/4/7/134715316/faradaxa-kivipabap-vexez.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/nokia_lumia_521_t_mobile_unlock_code_free.pdfIn PDF document text
    • https://nusosujorogu.weebly.com/uploads/1/3/4/5/134589145/45dc9557dc8.pdfIn PDF document text
    • https://kivasemav.weebly.com/uploads/1/3/2/6/132680863/dejemobo.pdfIn PDF document text
    • http://fafuzum.sportsontheweb.net/35988706018.pdfIn PDF document text
    • https://bedapidipofawif.weebly.com/uploads/1/3/2/7/132711979/jarob_zirunut.pdfIn PDF document text
    • https://vexibalob.weebly.com/uploads/1/3/4/8/134896466/37029.pdfIn PDF document text
    • https://fumitalabojaluk.weebly.com/uploads/1/3/5/3/135399187/kepuduva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/75350757607.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/rockstar_movie_hd_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/arjun_sarja_song_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/fatufefidep.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/workout_tracker_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/33075821060.pdfIn PDF document text
    • http://ligujizulogi.atwebpages.com/because_i_could_not_stop_for_death_theme_sparknotes.pdfIn PDF document text
    • http://padusij.onlinewebshop.net/do_you_need_maths_to_study_business_management.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/american_horror_story_season_guide.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/what_was_the_purpose_of_the_jacobin_club__1_point.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/lisudejeni.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC5 4620 bytes
SHA-256: b8e2d10af36436e53a2670a07b0795bf34cfe782a327d3f7ec55586c37179ef4
font_01_sfnt_off0000df69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF69 10112 bytes
SHA-256: 5595842fd106c3290c74d8c9ad4c60c43e532bb3a4b9c77a0c38d769fbba41b6
font_02_sfnt_off000101ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EA 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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