Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f92e1b7d69486f…

MALICIOUS

PDF

74.1 KB Created: 2022-03-30 19:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: bccdbf91c0ddcb60c7a2edc50ab0f865 SHA-1: cedc8ed97d94f36e8ff32cc7aa8578e5c0a2fb11 SHA-256: a4f92e1b7d69486fe2a6b291219110fb819c793a8dc2d575dfe474804ab9ce80
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

Heuristics 7

  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://tevav.co.za/YmrXLWy8?keyword=illustrated%20guide%20to%20the%20national%20electrical%20code%202017%20pdf PDF link annotation
    • https://renejineb.weebly.com/uploads/1/3/5/3/135322717/e8d5f2f8cd90058.pdfIn PDF document text
    • http://otevrel.eu/ckfinder/userfiles/files/pavetegubasafuroxefemuki.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/fe9e254a58d.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/kudavupovexamubimox.pdfIn PDF document text
    • https://rujavuxubigiwak.weebly.com/uploads/1/3/4/3/134331492/vetawodunibulalofiza.pdfIn PDF document text
    • https://wafewukim.weebly.com/uploads/1/3/5/3/135399971/8ee0b.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/162238ac315d31---21703899591.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16205d04ae8533---72836007293.pdfIn PDF document text
    • https://rogelevosegadu.weebly.com/uploads/1/3/4/6/134651245/77d9ddda6.pdfIn PDF document text
    • https://limavewudadeku.weebly.com/uploads/1/3/5/3/135323498/4237546.pdfIn PDF document text
    • https://bajarewejewud.weebly.com/uploads/1/3/4/6/134673735/vejasesevo.pdfIn PDF document text
    • http://trust-law-firm.com/userfiles/file/20220210064532_767340213.pdfIn PDF document text
    • https://nexonurobev.weebly.com/uploads/1/3/4/3/134371674/2782108.pdfIn PDF document text
    • https://nixejovebomir.weebly.com/uploads/1/3/1/3/131380485/6d312b29172b73.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621bdb55cd7f7---kabarufopexunur.pdfIn PDF document text
    • https://nabivedoki.weebly.com/uploads/1/3/1/4/131407492/4a80cb7.pdfIn PDF document text
    • https://mejiwixibunoxu.weebly.com/uploads/1/3/4/4/134402053/niperojugamipo.pdfIn PDF document text
    • https://sifoginugiji.weebly.com/uploads/1/3/4/5/134588619/806299.pdfIn PDF document text
    • https://bunazavej.weebly.com/uploads/1/3/5/3/135316535/1539640.pdfIn PDF document text
    • https://vizumijolotetip.weebly.com/uploads/1/3/5/3/135394273/duselato.pdfIn PDF document text
    • https://fizemovumevomuf.weebly.com/uploads/1/3/4/4/134491325/relufofaluzosi.pdfIn PDF document text
    • http://nakajima-ya.com/user_data/image/file/luzufaxeri.pdfIn PDF document text
    • https://nuvosukive.weebly.com/uploads/1/3/4/7/134718285/fukivuluguzow_goxutiza_nozig.pdfIn PDF document text
    • http://xedaptap.net/userfiles/file/muxawarewokutotuseko.pdfIn PDF document text
    • https://gudosotavuna.weebly.com/uploads/1/3/4/7/134722070/8379372.pdfIn PDF document text
    • https://www.monacruises.com/html/scripts/ckeditor/kcfinder/upload/files/55086252904.pdfIn PDF document text
    • https://paxuxitusokewu.weebly.com/uploads/1/3/1/3/131380341/vopubomubepi.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_off0000b9e6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b9e6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E6 11292 bytes
SHA-256: 159b06565a40688283044042a14364ca3e488c1de52f2172d84ef77e90cf98b1
font_01_sfnt_off0000d444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD444 18036 bytes
SHA-256: 15ba08bad6cf86f4871d83eb881c0685cef5b889ccca44cff647912bab374bbb
font_02_sfnt_off0001037a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336