Malicious PDF — malware analysis report

Static analysis result for SHA-256 27f77235d4245804…

MALICIOUS

PDF

65.1 KB Created: 2021-02-16 10:59:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0ae606a6fa2c51b41a25748badc21f33 SHA-1: a9d5700cd3a85a69d3e629a195f207de5b4f4f2c SHA-256: 27f77235d4245804f069cafd5db2770f8b8d6cf53bd6c233b4d9d024b95e906d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=beckett+graded+card+price+guide+%252317 In PDF document text
    • http://cartest.pro/wexixiritigitepibe0fk2y.pdfIn PDF document text
    • http://alfa-quest.ru/benim_hocam_matematik_video_ders_notlarpbs9v.pdfIn PDF document text
    • http://evatopshop.xyz/extreme_sports_car_driving_simulator_racing_gamesm81n5.pdfIn PDF document text
    • https://fixizogi.weebly.com/uploads/1/3/5/9/135959929/ad398bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482424/normal_5fe41c2ef37bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_60222b0ef27ff.pdfIn PDF document text
    • http://springtea.space/spanish_grammar_workbookv52ak.pdfIn PDF document text
    • http://upgrade4me.com/tuwizitelosevuzidzrut8.pdfIn PDF document text
    • http://orbitan.fun/31196473880n6xkp.pdfIn PDF document text
    • http://asta-stroy.ru/81192226483hyx5i.pdfIn PDF document text
    • http://supfitket.buzz/11301372425azn5i.pdfIn PDF document text
    • https://molisepav.weebly.com/uploads/1/3/5/3/135347716/kasupuziruxejib-luzadujikilepo.pdfIn PDF document text
    • https://lirefabagobaxi.weebly.com/uploads/1/3/4/0/134012393/lolozowed.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_off0000c1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B6 5144 bytes
SHA-256: ddf19fbea977461ab97283be5aa42ee895fb7d45ae254e68dc9c96a17a0b8be8
font_01_sfnt_off0000d34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34B 10272 bytes
SHA-256: eac0bbc949b11d3fb4a2a0637c439ff010ec402b6ad4d6231544b47e997c088b