Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2d73b8c84a14a2…

MALICIOUS

PDF

67.7 KB Created: 2021-02-09 10:08:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: abd93d5b1168a5b07e26d6f1594b2b8b SHA-1: f1e4ee20a244425012aa97ae55d05aa27412630b SHA-256: dc2d73b8c84a14a2d1259f0e4a3ca182369d71abb5fa66683cf661eaf1ac5778
204 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
  • 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://yafferge.ru/wb?keyword=short%20term%20disability%20form%20ny In PDF document text
    • http://itagreen.fun/dog_vomiting_white_foam_and_shakingk7eh5.pdfIn PDF document text
    • http://zorimiba.iblogger.org/assassin_s_creed_iii_parents_guide.pdfIn PDF document text
    • http://copyright-securityx.com/36397748344b0d6z.pdfIn PDF document text
    • https://cdn.sqhk.co/zuvezunotumu/F3ONijh/cartoon_network_arabic_star.pdfIn PDF document text
    • http://gazzsheff.xyz/xuwovusorepirapezuto4j3v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445118/normal_5fd6363e1d8a3.pdfIn PDF document text
    • https://cdn.sqhk.co/dedizozife/jjjgiiy/xokibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5fea191731030.pdfIn PDF document text
    • http://daddytestit.xyz/632503831048zbt2.pdfIn PDF document text
    • http://japancar-sib.ru/ford_5030_service_manualzxcsg.pdfIn PDF document text
    • http://idealica-ufficiale.site/88450377489mxzxm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fakeloj.rf.gd/govonuropotobuwo.pdfIn PDF document text
    • http://sesoxevanadike.epizy.com/united_explorer_card_guide_to_benefits.pdfIn PDF document text
    • http://zinebozozapi.rf.gd/deadpool_1080p_wallpaper.pdfIn PDF document text
    • http://wamesugome.rf.gd/f._n._a._c_test_full_form.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_off0000cc03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC03 5492 bytes
SHA-256: c96f499846e6e0b27093d43edbc0bb5342855a88e0e293685f82422e138421ca
font_01_sfnt_off0000de83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE83 10508 bytes
SHA-256: d1740c9d01a8b5aeca965df9585dee4cf9b624f911e826ed636189e111f6b504