Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d5147f34fcb8303…

MALICIOUS

PDF

88.8 KB Created: 2022-04-15 07:15:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-11
MD5: f3a8c897b20cd7f92bddde69d46cb426 SHA-1: 9f47ad65d03e4378a4e1777ed9b8e3f95545a005 SHA-256: 0d5147f34fcb83031f0dea925203429ba75e84ebf7916a3222ff3bf27e371f81
266 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing or malware distribution campaign, leveraging a link farm of SEO-optimized PDF documents hosted on disposable domains. The document body contains numerous URLs pointing to these external PDFs, suggesting an attempt to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or trojan distribution vehicle.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 8

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://lazav.co.za/YmrXLWy8?keyword=how%20to%20read%20music%20for%20bass%20guitar PDF link annotation
    • https://vofesoxofibebup.weebly.com/uploads/1/3/4/9/134900141/wibuwugijamelulifula.pdfIn PDF document text
    • https://xofokoraziv.weebly.com/uploads/1/3/4/7/134748977/dejusu.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2022-02-02/images/files/noforovefokenigipikuk.pdfIn PDF document text
    • https://potomifor.weebly.com/uploads/1/3/4/3/134332951/gowewuxuxuna-tabafitaxid-wutoneletesu-kamipabipozag.pdfIn PDF document text
    • http://jovanrajsic.net/storage/files/77380638761.pdfIn PDF document text
    • https://zuravenizojexex.weebly.com/uploads/1/3/4/3/134320774/dumofibinobemunogib.pdfIn PDF document text
    • https://ravixolagawiji.weebly.com/uploads/1/3/4/4/134491843/pedidonixasipodosota.pdfIn PDF document text
    • https://fajorisovobune.weebly.com/uploads/1/3/4/7/134752278/kikujigamab-poditipi.pdfIn PDF document text
    • http://gkb-vityaz.ru/upload/files/fapofepomosipamani.pdfIn PDF document text
    • https://pimiwunuxijekez.weebly.com/uploads/1/3/2/7/132741089/83aa11bd9d7ea5.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623ef2c1aeda4---71535267035.pdfIn PDF document text
    • http://marjoleintje.nl/include/userfiles/16421761062.pdfIn PDF document text
    • https://fuvanizififinu.weebly.com/uploads/1/4/1/3/141387142/vukuwafotegil-subumokaxupu-pubutofibodevip.pdfIn PDF document text
    • https://wupanotowi.weebly.com/uploads/1/3/1/4/131406855/96a43bd.pdfIn PDF document text
    • https://torosiwetub.weebly.com/uploads/1/3/5/3/135351177/refuranidijovi.pdfIn PDF document text
    • https://jevisupufobuniv.weebly.com/uploads/1/4/1/2/141253176/nosuz-tomitamix-salugu-pofetu.pdfIn PDF document text
    • https://niwezeruzebunol.weebly.com/uploads/1/3/5/3/135387699/buwipuli_denogikedor_didogi_jawowoki.pdfIn PDF document text
    • https://fixelomutitag.weebly.com/uploads/1/3/4/3/134339240/jolebuzoloneb.pdfIn PDF document text
    • http://cartopack.be/Images/file/55785797029.pdfIn PDF document text
    • https://xabanemexe.weebly.com/uploads/1/3/4/4/134443602/f2433f.pdfIn PDF document text
    • http://ambulatorioveterinariovianello.eu/userfiles/files/84567514589.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_off0000f401.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000f401.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF401 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C18 10988 bytes
SHA-256: 953f3581169f8c5b8872cf48929326dd6ad73b0a9175aa84398da9fd0ac0f25b
font_02_sfnt_off0001257e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1257E 17956 bytes
SHA-256: 5f8b2fb0e9062c724f1154206d23f20977eb7e4cd0319568d24d991b0058ac29