Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd73139aa8c8f46f…

MALICIOUS

PDF

88.0 KB Created: 2022-05-01 15:34:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 223a52c77033d1fc9790b817b306d550 SHA-1: 1c8ef273908f9ea83dd5ae802a15a4a5d2c59d50 SHA-256: cd73139aa8c8f46f44e77d092f0738b3cb5dce2d4e0af42e213fa33db14f0602
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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://wirut.co.za/YmrXLWy8?keyword=what%20is%20norse%20mythology%20equivalent%20of%20the%20apocalypse PDF link annotation
    • https://neseroto.weebly.com/uploads/1/3/5/3/135326238/c43c4a9464eb.pdfIn PDF document text
    • https://jutarufuro.weebly.com/uploads/1/3/0/7/130775772/4788639.pdfIn PDF document text
    • https://zozumufixava.weebly.com/uploads/1/3/0/9/130969508/5513880.pdfIn PDF document text
    • https://tezulitu.weebly.com/uploads/1/3/4/3/134316961/famorixegubexiw-vejeduxuj.pdfIn PDF document text
    • https://laxebuwefe.weebly.com/uploads/1/3/0/7/130775048/tirafebuno.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/watenazomipiwab-menofufi-vuraludedewanoz-voludiluveluv.pdfIn PDF document text
    • https://nazewaraja.weebly.com/uploads/1/3/5/9/135959380/4996482.pdfIn PDF document text
    • https://baongochoa.com/upload/file/kitikabofuguzidoje.pdfIn PDF document text
    • https://tusosalowikos.weebly.com/uploads/1/3/1/4/131453146/65e11460d346.pdfIn PDF document text
    • https://vigoruso.weebly.com/uploads/1/3/4/1/134131386/9921510.pdfIn PDF document text
    • https://risuwawew.weebly.com/uploads/1/3/4/4/134403416/kikojexasixu.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/re2gonlp2qfv0gpn2tva4lp2p5/takebasapexewemelolowo.pdfIn PDF document text
    • https://jibeguviju.weebly.com/uploads/1/3/4/7/134723477/ruvurepix.pdfIn PDF document text
    • https://lozekidari.weebly.com/uploads/1/4/1/4/141425613/6755eecc6ec.pdfIn PDF document text
    • http://avision-italia.com/userfiles/files/xakep.pdfIn PDF document text
    • https://zeziruxowajud.weebly.com/uploads/1/3/4/6/134698921/niziworuz-kuzezorujoxame.pdfIn PDF document text
    • http://asthmabd.net/journal/assets/ckeditor/kcfinder/upload/files/36229067567.pdfIn PDF document text
    • https://wiloropijevor.weebly.com/uploads/1/3/5/2/135299547/8165365.pdfIn PDF document text
    • http://muszempilla.com/files/file/66686643264.pdfIn PDF document text
    • https://gepupureja.weebly.com/uploads/1/4/1/2/141249745/ef95a75c7a8d91.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3E 18628 bytes
SHA-256: a9d4f9a80fa0a1cf484a473415cb8a32e4454099e7fd2920cf14f9ac962f97b7
font_01_sfnt_off00011e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E98 11348 bytes
SHA-256: 88bc78a8bef702677feb8a47eeec4fb481fb00c5a8fed1340b05d93b1eb1161c
font_02_sfnt_off000138eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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