Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453456e54e8e806…

MALICIOUS

PDF

77.0 KB Created: 2022-03-28 15:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: ec17a82a2179f77d70641d63b1f2dc12 SHA-1: 1ddba4e4a989e8126559d0a72a32a95b68f8c429 SHA-256: 4453456e54e8e8069848579ea8071719cb7b5b3fb1eadce4e0d27e01f54f6faf
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a link farm, with numerous external URLs pointing to disposable hosting services. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://yubit.co.za/YmrXLWy8?keyword=como%20llenar%20una%20carta%20poder%20simple%20mexico PDF link annotation
    • https://mukekevujawova.weebly.com/uploads/1/3/0/9/130969498/milikugoxemofu.pdfIn PDF document text
    • https://tapogizixe.weebly.com/uploads/1/3/4/8/134897788/sapad.pdfIn PDF document text
    • https://kunokepipadiri.weebly.com/uploads/1/3/3/9/133997431/kedakafofudibu-goxawe.pdfIn PDF document text
    • https://lafowesatumu.weebly.com/uploads/1/3/4/5/134503032/jilegololilawix-rofemibiniwe-wimubokubepaz.pdfIn PDF document text
    • https://duxegebipuvakij.weebly.com/uploads/1/3/4/0/134095857/af9fb1c92cb7f.pdfIn PDF document text
    • https://zatazonikafude.weebly.com/uploads/1/3/4/3/134340422/fabivetovobexa.pdfIn PDF document text
    • https://zumegopepotiko.weebly.com/uploads/1/3/1/3/131398003/be208ad.pdfIn PDF document text
    • https://xedafiwiwez.weebly.com/uploads/1/3/2/3/132302754/9858531.pdfIn PDF document text
    • https://gigemapafinul.weebly.com/uploads/1/3/1/3/131398374/dilur.pdfIn PDF document text
    • https://zibozofos.weebly.com/uploads/1/3/4/8/134896422/xafutud.pdfIn PDF document text
    • https://xujoxufopugapes.weebly.com/uploads/1/3/1/3/131380539/bd7bb87746478.pdfIn PDF document text
    • https://panonalosisewe.weebly.com/uploads/1/3/5/3/135316392/9883725.pdfIn PDF document text
    • https://livuwijonirib.weebly.com/uploads/1/3/4/7/134732661/jepirujiterawul_wuvaxodukapudur.pdfIn PDF document text
    • https://fodolirikixubug.weebly.com/uploads/1/3/5/2/135297927/fusokajoziwuna.pdfIn PDF document text
    • https://pajixuga.weebly.com/uploads/1/3/2/3/132303126/velaxuja.pdfIn PDF document text
    • https://pegupirorig.weebly.com/uploads/1/3/1/4/131406852/lakopejeneb.pdfIn PDF document text
    • https://guxaniwirivud.weebly.com/uploads/1/3/4/7/134736027/3380736.pdfIn PDF document text
    • https://gudifikopar.weebly.com/uploads/1/3/4/6/134627505/gikapomexefanu_fijira.pdfIn PDF document text
    • https://xisobapujizutu.weebly.com/uploads/1/3/4/5/134585888/zekavikaxa.pdfIn PDF document text
    • https://limakeluror.weebly.com/uploads/1/3/4/6/134657352/febunerazaretotono.pdfIn PDF document text
    • https://nedugebev.weebly.com/uploads/1/3/4/6/134602354/1155863.pdfIn PDF document text
    • https://lusixepapage.weebly.com/uploads/1/3/4/6/134605241/eeeaa6a8d17.pdfIn PDF document text
    • https://letalisukom.weebly.com/uploads/1/3/4/3/134316231/2585003.pdfIn PDF document text
    • https://lajezufil.weebly.com/uploads/1/3/4/6/134636359/4826246.pdfIn PDF document text
    • https://mudodawi.weebly.com/uploads/1/3/4/6/134653299/5575574.pdfIn PDF document text
    • https://dutagoloz.weebly.com/uploads/1/3/0/8/130814416/garezolunesiga.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_off0000c783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC783 17744 bytes
SHA-256: cbc1d9eaec46fe29f4646a404ba703bd1d821836a7fdc98579fc05d315eda516
font_01_sfnt_off0000f4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E9 10908 bytes
SHA-256: 0583d9812d0b59e29c4b353d8f0ae9e7c4c155397ba2e789ae90e4aad46aadf1
font_02_sfnt_off00010e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E27 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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