Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ac7bc4c085d819…

MALICIOUS

PDF

70.8 KB Created: 2021-02-24 21:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a08b1e733687feef9336033ab99df33d SHA-1: 6c27fb00b3f965062ed87895801a15d4fbab46b7 SHA-256: 03ac7bc4c085d819de52664534406df809137639ed2f7e0aeb6576ebdc5fef8d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=gears+of+war+3+apk+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488317/normal_5fcdf952b90d0.pdfIn PDF document text
    • http://ital-tess.space/ninja_samurai_assassins_creed_game_ninja_warrior1f9cb.pdfIn PDF document text
    • http://goodnatural.space/17129738581fzejo.pdfIn PDF document text
    • https://cdn.sqhk.co/linerutinew/RM7b7DV/difference_between_barbershop_and_hair_salon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459319/normal_5feaef9b7b5bd.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/windows_xp_activator_torrentnv1ni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388842/normal_5ffa34cfd30b7.pdfIn PDF document text
    • http://milanbeach.fun/vasopcwbvf.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/vetamedisoz/android_17_vs_piccolo_tfs.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/feeding_guidelines_for_3_month_old_baby.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/65581652393.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/12469633614.pdfIn PDF document text
    • http://vukefuxi.epizy.com/sync_3_android_auto_via_bluetooth.pdfIn PDF document text
    • http://pesuvomekujidi.rf.gd/60828896134.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_off0000d8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C2 5388 bytes
SHA-256: a4e0e06b312fd8a32114c0b8839c9325e9bab8d13b0320662aa23ab618acda88
font_01_sfnt_off0000eb3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3E 10368 bytes
SHA-256: 488d2785a61776e6d98bd427044d1ce83f43be08bd8464f3d95c0184f2372836