Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9056adca89947ba…

MALICIOUS

PDF

84.8 KB Created: 2021-02-15 07:35:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 227b5a41d99133bf1f1ebf25e58066d1 SHA-1: cbee448350a5d4642b903ce815015002630928b5 SHA-256: c9056adca89947ba107e1bddab45d34436cc90737c9823e8db6a380f51f3d59c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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/123?utm_term=extract+caphras+stone+bdo PDF link annotation
    • https://dolibaradodusop.weebly.com/uploads/1/3/4/5/134595809/2986789.pdfIn PDF document text
    • https://cdn.sqhk.co/jexerigix/azTjcha/45749735376.pdfIn PDF document text
    • https://vudelugofede.weebly.com/uploads/1/3/4/3/134383428/wuvodetigufutit.pdfIn PDF document text
    • https://cdn.sqhk.co/xenumobavun/DjjdE9L/mijikodinuf.pdfIn PDF document text
    • https://zexiditituluw.weebly.com/uploads/1/3/4/7/134734655/rosewugo-lujavosid-pufuku-sigesitax.pdfIn PDF document text
    • https://sipesavuw.weebly.com/uploads/1/3/4/6/134697333/d28ab64.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/tFjhhdF/sipobobaxavebuvamitel.pdfIn PDF document text
    • https://jifosibupegexuv.weebly.com/uploads/1/3/4/6/134692258/868a54.pdfIn PDF document text
    • https://cdn.sqhk.co/pifixijowoka/uigjbhe/telecharger_lucky_gold_have_a_lucky_day.pdfIn PDF document text
    • https://rumevupalod.weebly.com/uploads/1/3/0/7/130739773/molexirux.pdfIn PDF document text
    • https://dixapixukezawe.weebly.com/uploads/1/3/5/3/135388261/4975357.pdfIn PDF document text
    • http://ouily.xyz/clash_royale_pc_windows_7s2e0g.pdfIn PDF document text
    • http://topvideo.design/snowboard_party_world_tour_mod_apk_android_1cjvfo.pdfIn PDF document text
    • http://logmeinnow.xyz/59483754472w56ug.pdfIn PDF document text
    • https://warexuzema.weebly.com/uploads/1/3/4/6/134601764/pakavij-luzopiwebebebe.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/mhbRwic/kixebazosidipujin.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/fobupojowojon/misepix.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/50355293054.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_off00010952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10952 5292 bytes
SHA-256: 52fc4189435c4856ba6f3d6814a2513ab239a79f9a1b05d88af1ab2b54f184d9
font_01_sfnt_off00011b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B45 14272 bytes
SHA-256: ac6903a5f8e5cba89f810e246cb5b54de67c21f97325de1b86199d566a49564e