Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b41b54fe6524697…

MALICIOUS

PDF

76.1 KB Created: 2021-03-01 11:00:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 430c730253908a8ec912b2f852ab4c36 SHA-1: e817925128ea126e942be35721836fc63eb0e3e5 SHA-256: 9b41b54fe652469779fe082d85de3d8ea24a231867e31ab109204bb6a890b255
136 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
  • 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/award?keyword=who+wrote+the+thea+stilton+books PDF link annotation
    • https://cdn.sqhk.co/fokatekox/Qcijzh4/red_balloon_song_home.pdfIn PDF document text
    • https://cdn.sqhk.co/nomuzali/najgXid/panther_hero_fighting_2020_kung_fu_fighting_heroes.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/VCaLkb5/vengeance_the_old_school_rpg_android.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisidumes/6hbigih/makeup_palette_meaning_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/nilimijano/fghDbhd/adobe_illustrator_draw_ipad_vector.pdfIn PDF document text
    • http://1offpark.xyz/the_sociopath_next_door_downloadei07c.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/mGUNJha/94783392223.pdfIn PDF document text
    • http://boost-shop.xyz/a_time_to_kill_movie_true_storyi2qlo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485935/normal_60240606690d3.pdfIn PDF document text
    • https://cdn.sqhk.co/xojafimib/hdhfLhd/15626516772.pdfIn PDF document text
    • http://ukranews.site/positive_parenting_rebecca_eanesss41w.pdfIn PDF document text
    • https://cdn.sqhk.co/xogutozo/jaOsqja/90375421825.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387061/normal_6030210c5f75d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468267/normal_5fcf8ca4dfe6b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fivasire.rf.gd/how_to_learn_coding_free_of_cost.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_off0000e3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AF 5084 bytes
SHA-256: 1a60a156bd253e33a4fae6175ea264973e0eeb6a6bfcdde002c109b61079362c
font_01_sfnt_off0000f506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF506 14172 bytes
SHA-256: ea6e4fdd8ab2689637aacff76b88b6ac704e124fd69e8befef685bd2d8adb146