Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4e60bebdd6c773f…

MALICIOUS

PDF

65.2 KB Created: 2021-02-21 19:00:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9be4e6c72582e15c65272cb0df87072d SHA-1: cc202b64a17feba3d85be4d243f4a2bbca8bcdd4 SHA-256: b4e60bebdd6c773fdd68bf12e2eae72e6d4c224eebdaf9f77c79d27e9ec98e1a
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://jottigo.ru/wix?keyword=statbanana+overwatch+maps PDF link annotation
    • https://cdn.sqhk.co/vibisimak/1UjfywJ/train_to_gensan_apk.pdfIn PDF document text
    • http://dodapim.22web.org/92674844465.pdfIn PDF document text
    • http://yogist.fun/faremupabuwexosefuzegekqz8og.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420431/normal_6005296421ff5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_602d76bf2f88f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464052/normal_601098a6e13ca.pdfIn PDF document text
    • https://kokubexajaluk.weebly.com/uploads/1/3/2/6/132681668/4e23fc2dd.pdfIn PDF document text
    • http://sallehub.xyz/meganthi_circus_mp4_video_songsbazig.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/fsmheji/duddu_my_virtual_pet_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476446/normal_5fceef6daa589.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383450/normal_60124c9529528.pdfIn PDF document text
    • http://grenkasalo4.xyz/cover_letter_format_for_report_submissionfolwd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487413/normal_5fd8fc1ea1a3f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxaxesaxejov.rf.gd/milling_cutting_tools.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_off0000c252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC252 5536 bytes
SHA-256: 11714233daa48ecb9ce1ab0c0cd79c8b0b0a074fb79bb3beac2dda32ca8163e5
font_01_sfnt_off0000d511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD511 10300 bytes
SHA-256: ea420fe21285464dc3c946f66aa67d574181dfeddded1e49ae528c887f23820b