Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4fac9240d6ffcd…

MALICIOUS

PDF

71.5 KB Created: 2022-03-30 14:05:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 0f1e46d304e68d465ba613385bfc361e SHA-1: 82641373b2ccb68dfefdfe1eda4a0004e03b0bf9 SHA-256: de4fac9240d6ffcdd4a3fc6ec373538a3ba1df7bffe0eda99d0f4fc382afdfd6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://sunuf.co.za/YmrXLWy8?keyword=zyxel%20pk5000z%20setup%20guide PDF link annotation
    • https://zufinoresazoso.weebly.com/uploads/1/3/4/7/134711963/a891894ac1653.pdfIn PDF document text
    • https://pilinasovoda.weebly.com/uploads/1/3/4/1/134132167/c13df44190b4a6.pdfIn PDF document text
    • http://glassinter.de/kcfinder/upload/upload/17448858971.pdfIn PDF document text
    • http://ccemax.com/js/kcfinder/upload/files/85896238688.pdfIn PDF document text
    • https://musazulawikale.weebly.com/uploads/1/3/5/3/135305526/napako.pdfIn PDF document text
    • https://tivirubopif.weebly.com/uploads/1/3/1/4/131406506/1132335.pdfIn PDF document text
    • https://xn--pssa17sw71b.tw/upimages/files/zapafofusomemavolo.pdfIn PDF document text
    • https://rukururage.weebly.com/uploads/1/3/0/9/130968917/fibepakujilimu.pdfIn PDF document text
    • https://zinimokukaz.weebly.com/uploads/1/3/6/0/136053997/waxefizixem.pdfIn PDF document text
    • http://martonfogtechnika.hu/admin/kcfinder/upload/files/88623310167.pdfIn PDF document text
    • https://firajapototirop.weebly.com/uploads/1/3/1/4/131452771/segoletipunobut.pdfIn PDF document text
    • https://jometulezut.weebly.com/uploads/1/3/4/8/134869356/lerukutujogutom.pdfIn PDF document text
    • https://eurosan.pl/user_images/file/zasodorozawupovenulewofew.pdfIn PDF document text
    • https://zotadapavera.weebly.com/uploads/1/3/4/4/134483721/fedivegusedo-bakobonitixate-rirexofupu-musowibovek.pdfIn PDF document text
    • https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/runam.pdfIn PDF document text
    • http://pronobile.com/catalog/file/kapoj.pdfIn PDF document text
    • http://www.casopisfolklor.sk/assets/kcfinder/upload/files/puratilide.pdfIn PDF document text
    • https://nujamoxe.weebly.com/uploads/1/3/4/2/134234607/4961091.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 extracted file (font_00_sfnt_off0000b481.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b481.bin)

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB481 10768 bytes
SHA-256: 2773c8075093413e9b4313ccf6860095cb5e0ed6b4e6c8836b23fbdb93276269
font_01_sfnt_off0000cd53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD53 17044 bytes
SHA-256: 25556ebfeef84d3a9dd0f4aec460bddad455bc54e63e3a829f0340003adfba32
font_02_sfnt_off0000f9d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D4 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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