Malicious PDF — malware analysis report

Static analysis result for SHA-256 d77755fa68baa792…

MALICIOUS

PDF

67.8 KB Created: 2021-03-01 06:31:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 016b0990845aac716821fd9d0ac13007 SHA-1: d7023e6581b49a8eaad8faaad983d81e515e69a2 SHA-256: d77755fa68baa7925a61411c8b84929f6eb246cf1c0c3b23d97447435e8ee6a9
134 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dugedepap.ru/award?keyword=unspoken+feelings+of+a+gentleman+download PDF link annotation
    • http://50offstore.info/facial_nerve_ppt_freepqmu2.pdfIn PDF document text
    • https://cdn.sqhk.co/dobulefipuji/jfEhgxB/98182577342.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/2fic6gf/slither._io_unblocked_games_at_school.pdfIn PDF document text
    • http://fastcreditcheck.info/41384603013mob5x.pdfIn PDF document text
    • http://palikexifumalam.mywebcommunity.org/jafimofobozojev.pdfIn PDF document text
    • http://want-seo.ru/hoi4_general_vs_field_marshal892up.pdfIn PDF document text
    • https://cdn.sqhk.co/weteroliwo/2hrgf3v/bumijibaxuxedozevajureliz.pdfIn PDF document text
    • http://ligugiban.scienceontheweb.net/sans_top_20_critical_security_controls_for_effective_cyber_defense.pdfIn PDF document text
    • http://delinapod.mypressonline.com/how_long_to_bake_brownies_in_perfect_brownie_pan.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/united_airlines_carry_on_baggage_size_and_weights56wi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388280/normal_5fc921cf8e1e1.pdfIn PDF document text
    • http://ctyr.ru/60688217062uk9oq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cd2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2B 5412 bytes
SHA-256: 8b1494296ab8886f644589a379fba347f3259b7f563d2d834ee0f3eecd71c43a
font_01_sfnt_off0000dfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA0 10184 bytes
SHA-256: 5db0a8c07f9cd50f44585aa5ce8ca8697a364b8a7a3552eef6f52b4b8f0685b5