Malicious PDF — malware analysis report

Static analysis result for SHA-256 776cc9f48ba2a5cf…

MALICIOUS

PDF

71.3 KB Created: 2021-02-25 16:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8aa47a68aafd736328553052c4e3e54d SHA-1: efd373caf16893e4cb3004339f51d0e808d27253 SHA-256: 776cc9f48ba2a5cf053ac10631274da890a8d1440286dfa29484adce7512f3ef
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=roland+td+4+price PDF link annotation
    • http://gadetebes.sportsontheweb.net/rime_of_ancient_mariner_albatross_theme.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/gigRidq/talking_droid_old_version.pdfIn PDF document text
    • https://lefipejime.weebly.com/uploads/1/3/4/6/134668800/1de9f0093819.pdfIn PDF document text
    • https://cdn.sqhk.co/siwemawatu/ie7ehh1/23255036743.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/joOiaYw/tmnt_mutant_madness_mod_apk_1._25._1.pdfIn PDF document text
    • https://vorupegesozuzow.weebly.com/uploads/1/3/1/4/131453293/jozigusid_gipuxiweliga_newewiseredon_litogarojopa.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/hhpXhc6/30_days_lose_weight_workout_for_flat_stomach.pdfIn PDF document text
    • https://tabupuja.weebly.com/uploads/1/3/4/6/134647436/1923292.pdfIn PDF document text
    • https://cdn.sqhk.co/lewiwifo/ichc8gd/ballerina_game_shakers_app.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/vofadoloves/nice_guidelines_mental_health_act.pdfIn PDF document text
    • http://dimazobuxijema.epizy.com/basic_geometry_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/antonio_carlos_jobim_sheet_music.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_off0000dd6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6D 4984 bytes
SHA-256: d043d5e96f4aaf6527ce460736491e2c583271b6120869f81c3c0911a6193886
font_01_sfnt_off0000ee79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE79 10124 bytes
SHA-256: 459bc85e44e86ef232f48004d783fe79d2f20f039f1e2f99e23ce6acfc1ec240