Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f89d8b493f8d5cb…

MALICIOUS

PDF

61.5 KB Created: 2021-02-16 16:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8899c21a8475f046b7c3613286df52e6 SHA-1: ad41985b7d3474435c1ba5744e880bd0dbf2cfe2 SHA-256: 4f89d8b493f8d5cb37d59ae4fb079f46ad19cdabb5054440e50b87576cef95d3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=tv+guide+vancouver+telus PDF link annotation
    • https://sekorora.weebly.com/uploads/1/3/4/8/134856449/banegupolav.pdfIn PDF document text
    • https://wuxinaruniluxod.weebly.com/uploads/1/3/4/8/134882591/b5c6f816e85e0e5.pdfIn PDF document text
    • http://farvestnn.ru/sawosarelixolabuzanilifuf6zsm.pdfIn PDF document text
    • http://samettemiz.xyz/gmail_app_inbox_categoriesebite.pdfIn PDF document text
    • https://dalujukonuxuda.weebly.com/uploads/1/3/1/1/131163933/23945f89c9fb3.pdfIn PDF document text
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/wakarakuzepixatuzum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421940/normal_5fcff6ab560c6.pdfIn PDF document text
    • http://onlinesos.tech/chhota_bheem_race_game_hack_apkwtwyj.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/autocad_2d_chair_blocks_freegvr5r.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/jepinebawo/alexis_kagame.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_off0000b588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB588 5116 bytes
SHA-256: daa262d44a66821bbe7a917b0611af394eb90a69799bb4930c884884bb63d74d
font_01_sfnt_off0000c706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC706 10204 bytes
SHA-256: 11724de379449543b09da4c2298001cfd071eb36fb0b3c9e7183012d11173965