Malicious PDF — malware analysis report

Static analysis result for SHA-256 73df2c429d6e3264…

MALICIOUS

PDF

76.4 KB Created: 2021-01-27 10:49:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a683abdfcbabfdcd0a1d0beb5ec0276d SHA-1: ffaf089aae41f3aba2ea07d57b7cb4c4ad358ceb SHA-256: 73df2c429d6e3264184a662c0fcaf896f9babab3e8f2f1f8acc3f0a17b1cbb9e
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://leonvi.ru/wb?keyword=war%20and%20magic%20game%20guardian PDF link annotation
    • https://mutefalififide.weebly.com/uploads/1/3/1/3/131383766/2981299.pdfIn PDF document text
    • https://wironutoti.weebly.com/uploads/1/3/0/7/130739747/2893558.pdfIn PDF document text
    • http://fb-copyright-help-from.com/artflow_paint_draw_sketchbook4c8m9.pdfIn PDF document text
    • http://ilkertr.shop/40625368064llj1j.pdfIn PDF document text
    • http://kulinar2020.site/bikagomupibuwagiridas4jm1p.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/vujumavakunab.pdfIn PDF document text
    • https://ziwolowuwuxux.weebly.com/uploads/1/3/5/3/135321756/234e7.pdfIn PDF document text
    • http://unityfree.xyz/storybeat_apk_no_watermarknul7e.pdfIn PDF document text
    • https://butevexonukuzi.weebly.com/uploads/1/3/2/6/132681970/kanubadiroxisefaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuronufepu/ijjikgc/zibojinexom.pdfIn PDF document text
    • https://roxadaxakisa.weebly.com/uploads/1/3/1/4/131437443/a375ab276f65af.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/xodisifasozisedipase.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/multivariate_calculus_textbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/ffxiv_baelsar_s_wall_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/formation_nutritionniste_alger_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/optec_displays_media_editor_3.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/prodigy_math_game_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/48149375268.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_off0000ee2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2D 5064 bytes
SHA-256: 81189e9a370f7b56837c25acf1c2f8ce15e654742cc4e299d18a9e26b156bbc2
font_01_sfnt_off0000ff60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF60 10836 bytes
SHA-256: f6a345d42ca9fc21779728fbc358c30dc0e11eb2c9fccbbfbb0b66d1cd66147e