Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fe4b81b863c6d4…

MALICIOUS

PDF

72.7 KB Created: 2021-03-03 20:42:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5b568f8e5f9ef7e1b51b404bd8a40cbb SHA-1: 218c116eb1520b7bfb2eaa4f98af258d6de10d87 SHA-256: 65fe4b81b863c6d4571b3fc1bbca2d25958d0d5126ea2a582cd5d7b961861dc4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/wix?keyword=synthes+tfn+advanced+technique+guide PDF link annotation
    • http://zawugudumi.getenjoyment.net/lunoropixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_60343fe5b759e.pdfIn PDF document text
    • http://swiss-gear-top.xyz/vakukugazufajorukolokexa437u6.pdfIn PDF document text
    • http://martakkord.ru/boliyan_song_jass_sanghamw8y2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454045/normal_600ee6222f09e.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/ciccgiN/stick_super_fight_hack_mod_apk.pdfIn PDF document text
    • http://gayerkan.com/masuwujapasazam3lyz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd1708f02fdb.pdfIn PDF document text
    • https://xirofagoxo.weebly.com/uploads/1/3/4/5/134576207/bamovata.pdfIn PDF document text
    • http://front-glass.space/bemimsumhy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_602874442860c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dapizodipe.myartsonline.com/46632803477.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_off0000d583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD583 5548 bytes
SHA-256: c863a95cfdee97fc82e892a22816eae661a54c28d2949cea8df49366427271a4
font_01_sfnt_off0000e86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86C 13940 bytes
SHA-256: 07b13cbfb285fa3a2d122755baa5b178026051864e82926f2e0a217958958863