Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1eba5a62152d9b…

MALICIOUS

PDF

68.5 KB Created: 2021-02-15 01:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2330a6b08e745074daca8dc545a702d2 SHA-1: d9d67caaba653894dcb742392e2305ae91d096b9 SHA-256: df1eba5a62152d9b9e38ad09263946b5b076c3832cd43a17c2dda6f959cb719d
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://maypoin.ru/123?utm_term=technique+pose+placo PDF link annotation
    • https://cdn.sqhk.co/tevimuwijile/eHieUWU/gujuremes.pdfIn PDF document text
    • https://cdn.sqhk.co/vumorumuvogi/ichhQjb/pekodelezapoperazu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_601bd56137641.pdfIn PDF document text
    • https://cdn.sqhk.co/latusetime/ohhhhCF/black_owned_hair_braiding_salons_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414514/normal_5fdc78307500a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421959/normal_5fe42c496fc90.pdfIn PDF document text
    • https://cdn.sqhk.co/perekowemo/Wjjjdzf/escaping_the_prison_funny_adventure_apk.pdfIn PDF document text
    • https://pibigetikuke.weebly.com/uploads/1/3/5/3/135387636/2e5ec1c168b.pdfIn PDF document text
    • https://cdn.sqhk.co/vasavubedo/gfhblFU/sims_3_world_adventures_france_nectary_tomb.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/jhijjij/sebizetoribovemoza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424010/normal_5fe2dc5a9b115.pdfIn PDF document text
    • https://cdn.sqhk.co/bodavadu/jhxjdhg/micro_switch_club_car_golf_cart.pdfIn PDF document text
    • https://cdn.sqhk.co/kinemefuwa/zgqVhdt/shark_simulator_hungry_attack_game.pdfIn PDF document text
    • https://cdn.sqhk.co/xatuxazaz/hhe9Put/ghost_town_adventures_mystery_riddles_game.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/sakaburepagase/jotikimaxuge.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/game_taxi_driver_3d_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/receipt_template_uk_word_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/jikagigisanalixagosesuwi.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_off0000d271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD271 5000 bytes
SHA-256: d2b643d36af6538f73853991134a1d2955ea5f53839197eb3070e004702d9e40
font_01_sfnt_off0000e373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE373 9932 bytes
SHA-256: ba069da8c356b6dbc4e302c05fbc08a8de92106e859d0ca82474e1c30b7904ad

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