Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6585891f0f8e4cd…

MALICIOUS

PDF

67.0 KB Created: 2021-02-13 01:11:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8eeaa16feb8480c2a8cc4b0087b60d4c SHA-1: 1e79b6df678002d19775a20a6bd1ec628a85a343 SHA-256: c6585891f0f8e4cd722ef11da571edec5ecdf766bb972839d83d0f4f88d041b9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/wb?keyword=fleshgod%20apocalypse%20agony%20sheet%20music PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368477/normal_5fd982892074f.pdfIn PDF document text
    • https://marodesama.weebly.com/uploads/1/3/5/3/135349202/2166195.pdfIn PDF document text
    • https://cdn.sqhk.co/jalosemuv/43Faqdp/sidov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403121/normal_6026b87eac250.pdfIn PDF document text
    • http://paganel.world/7958892457551zrz.pdfIn PDF document text
    • https://dirasikazeta.weebly.com/uploads/1/3/1/3/131379856/708273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481058/normal_601eaa1d7db91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425227/normal_600f203b772eb.pdfIn PDF document text
    • http://dkblogin-de.com/94123289529xefmm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370071/normal_5fdd25e2627c8.pdfIn PDF document text
    • https://kusavavatixe.weebly.com/uploads/1/3/4/8/134878613/zamufavetak-gabutug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_60270a5020e6e.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/K2T6Nie/gazaxitabenuvofo.pdfIn PDF document text
    • http://drovazvenigorod.ru/monopoly_board_template_editableyi69v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385437/normal_5fe1966c7d271.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_off0000c46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46A 5448 bytes
SHA-256: 72c7951e38fec3b5dc34e4796bb389413dfa9c316e60546f36da506b06c14e8d
font_01_sfnt_off0000d6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DC 11536 bytes
SHA-256: d720277ee2386779b50b7de8f7297136a2bfcb3107255f28704710f9ab13f9d5