Malicious PDF — malware analysis report

Static analysis result for SHA-256 03979d4a291e3e43…

MALICIOUS

PDF

77.5 KB Created: 2021-02-04 19:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c38d11fa46e62c971c11df03ebac0394 SHA-1: 3f276477fb8f8793658f4697a7327dd5caabeb34 SHA-256: 03979d4a291e3e43762bd39c55a6d35e6f2800b70f9d4c6095358ca481c8f961
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://baarspo.ru/wb?keyword=aponia%20truck%20apk%20cracked PDF link annotation
    • https://cdn.sqhk.co/dukapudubi/Mhdidjf/yu_gi_oh_duel_links_auto_deck_builder.pdfIn PDF document text
    • https://cdn.sqhk.co/xakurusuk/IjjCqia/burger_shop_3_online.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/jbvqmVb/minecraft_building_instructions.pdfIn PDF document text
    • http://itanah.space/pexedunizuwusubw4dnb.pdfIn PDF document text
    • https://cdn.sqhk.co/gigepiwej/dGjfib3/cube_stacking_arcade_game.pdfIn PDF document text
    • https://gosomojigu.weebly.com/uploads/1/3/1/4/131438658/rezade.pdfIn PDF document text
    • http://esclub.pro/easy_fingerpicking_uke_songs4hlic.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/geNBwjf/zunemipesekuf.pdfIn PDF document text
    • https://gidapozu.weebly.com/uploads/1/3/1/3/131379371/wexusejakuv-disojogi-jutefopuren-wifisuromovu.pdfIn PDF document text
    • https://cdn.sqhk.co/bosesegivu/hfahigg/jumapudemogajagalinepadop.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/tutasujal/picsart_para_pc_baixaki.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/magatuzonekajakoworenu.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/but_however_although_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/icao_annex_14_volume_1.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/zilazeku.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_off0000f1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AA 4912 bytes
SHA-256: bab45c4f14630ddbdf7b6de5e2fff55114935f846d0addcbc393d8d3bc98872b
font_01_sfnt_off00010271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10271 11408 bytes
SHA-256: 783ebb8899e0c4c8528ba7fe178fceefe6e57316438807b57ac5cc52b491b12f