Malicious PDF — malware analysis report

Static analysis result for SHA-256 0746a86ce15a3b19…

MALICIOUS

PDF

73.4 KB Created: 2021-02-20 23:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 654f27ea7197c5727bc0650323668e88 SHA-1: d2fecafc7159a6dba3524d029b60cceb6be351df SHA-256: 0746a86ce15a3b192a413fe41d0bd54c9b3be5a6d2b7d38bfac19ce432d1f7e4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wb?keyword=casio%20g%20shock%20watch%20manual In PDF document text
    • https://cdn.sqhk.co/lokovipazal/xPqjjjT/xuvotagewuxajog.pdfIn PDF document text
    • https://cdn.sqhk.co/rurokusulos/hgjgihI/werewolf_online_ranked_roles.pdfIn PDF document text
    • https://cdn.sqhk.co/vizebika/ifsIAhi/94793662493.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/aichehj/stickman_battle_shadow_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fivufotimad/hl0gfTN/primal_legends_hack_tool.pdfIn PDF document text
    • http://tugrull.com/why_is_my_iphone_5s_battery_draining_so_fast4f860.pdfIn PDF document text
    • https://cdn.sqhk.co/dederubap/fjgBQIU/nostalgia_critic_wikiquote.pdfIn PDF document text
    • http://creditreportusa.info/zozoriran82ga.pdfIn PDF document text
    • http://copyright-securityx.com/fisewoperowijulewovr2oxo.pdfIn PDF document text
    • http://ch-redirect.icu/galaxy_s5_active_release_date4tby9.pdfIn PDF document text
    • https://cdn.sqhk.co/mojupesonon/fTgjnjd/ramp_car_stunt_racing_impossible_track_racing_unblocked.pdfIn PDF document text
    • http://hurricane1.space/best_songs_of_2019_clean_youtubexwemo.pdfIn PDF document text
    • https://cdn.sqhk.co/gugirejol/fgeXwje/ice_hockey_world_championships_2019_wikipedia.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/gelawiweza/superficial_vein_thrombosis_treatment_guidelines_accp.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/jumefixitawegarowifa.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_off0000e48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48A 5180 bytes
SHA-256: cf3567b8d09b2f5cb60ea71f8123a21cb5adff215980fa5a47745b9392a8ce73
font_01_sfnt_off0000f616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF616 10252 bytes
SHA-256: fd69cf6024dc721b3a0ae63e638c5356f593234317d9a4d455fcc2715771d227