Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4feac952fbb9100…

MALICIOUS

PDF

72.7 KB Created: 2022-04-07 17:15:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: b59786d2707da9e03159809f3d2f589b SHA-1: 916a67f3e0350fd424454d1e1981d927072d6104 SHA-256: a4feac952fbb91004def8c45fd8dfc17aacd454574d9d6e970857b3a8c4fe102
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://yoyep.co.za/YmrXLWy8?keyword=acer%20aspire%20e15%20display%20price%20in%20sri%20lanka PDF link annotation
    • https://zizopozuwugova.weebly.com/uploads/1/3/0/7/130775786/9712232.pdfIn PDF document text
    • https://favujoki.weebly.com/uploads/1/3/5/3/135302790/3adb6d8b.pdfIn PDF document text
    • http://creativetechno.in/userfiles/file/403711665.pdfIn PDF document text
    • http://briquettemachinery.com/d/files/resupeveku.pdfIn PDF document text
    • https://puwikopigab.weebly.com/uploads/1/3/1/1/131163601/jopume-katevapipij.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/e835a3f1d11c68ddd3c6b355bf6ce5a2/56571391344.pdfIn PDF document text
    • http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621cef2473b54---wugidade.pdfIn PDF document text
    • https://porukugo.weebly.com/uploads/1/3/1/3/131380087/2dd75523.pdfIn PDF document text
    • https://niwejeru.weebly.com/uploads/1/3/4/3/134308800/dc6b4ed1cf72.pdfIn PDF document text
    • http://clerus.hu/files/file/jomemaburegirevu.pdfIn PDF document text
    • http://sigmabhp.pl/userfiles/file/90329326302.pdfIn PDF document text
    • https://rerijaruduja.weebly.com/uploads/1/3/4/6/134649434/vixoradenafobujefido.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/63905040268.pdfIn PDF document text
    • https://rabusefikitane.weebly.com/uploads/1/3/5/3/135314736/dozimu.pdfIn PDF document text
    • http://mutamobilya.com/images_upload/files/pakufedilusijowizibe.pdfIn PDF document text
    • https://aucordechasse.fr/vosImages/71826749109.pdfIn PDF document text
    • http://mhfmjournal.com/data/22/2/55/64/2544879/user/2788947/htdocs/userfiles/file/96363986474.pdfIn PDF document text
    • https://pozebukewif.weebly.com/uploads/1/3/4/3/134330137/539005.pdfIn PDF document text
    • https://episcopiaoradiei.ro/files/repogadonolawewaki.pdfIn PDF document text
    • http://artechq8.com/beta/uploads/files/lizejekokolemo.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_off0000b6f4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b6f4.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6F4 17416 bytes
SHA-256: 1e0dab1a83ccdbd3ae72d6bb0e3d40109be9cef84b9dce4afb7a0aa5b15eb2e7
font_01_sfnt_off0000e4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC3 10660 bytes
SHA-256: f9eefa2ee89107c7087b4dbecac423d0449ee0960ed8cc238113b4cacc4fafb3