Malicious PDF — malware analysis report

Static analysis result for SHA-256 219f23bfc7a2bccc…

MALICIOUS

PDF

86.3 KB Created: 2021-04-06 20:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f4c273b0b157ffcd16cb4b1db6bf794a SHA-1: 9dc0d25a9666124883e022e83c84036dbec4c9e9 SHA-256: 219f23bfc7a2bccc6d2b384260f5bf21c6a35d2e1c72adb4eb5fdec796103815
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many pointing to disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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 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://nipisod.ru/strik?utm_term=gold%2527s+gym+xrs+50+home+gym+manual PDF link annotation
    • https://cdn.sqhk.co/xufaribo/Hvkxjh1/momifurerupaxeruviwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366949/normal_6064e2dc547b4.pdfIn PDF document text
    • http://motorutovibipe.sportsontheweb.net/what_are_the_characteristics_of_naturalism_in_literature.pdfIn PDF document text
    • http://boost-shop.xyz/how_to_scan_multiple_pages_on_hp_deskjet_2542j3aig.pdfIn PDF document text
    • http://bajelow.iblogger.org/25411620774.pdfIn PDF document text
    • http://rezotu.xyz/69163881446ypcg7.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/33761423697n4hhb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465274/normal_604bbc4b60ada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417129/normal_5fd8818c3353e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_6016e5adb645c.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/hhThfm9/39180835508.pdfIn PDF document text
    • http://gakarefutejet.iblogger.org/royal_ceramics_lanka_plc_annual_report_2016.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409840/normal_6007603da45c9.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://zhigina.ru/civil_service_equivalent_military_rank_in_bangladeshqn895.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/heggih3/rexejepi.pdfIn PDF document text
    • http://posurazatux.mypressonline.com/nomugeteliruguwekaler.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://bagugexasorip.myartsonline.com/muwegasarikinitirined.pdfIn PDF document text
    • http://dakisexojir.rf.gd/hp_probook_6470b_battery_not_detected.pdfIn PDF document text
    • https://e0271a52-a7af-48e9-8a99-924ce320ec62.filesusr.com/ugd/be5703_3b6dfcc5713f4d61bc35e95a171ef77b.pdf?index=trueIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_e226574065de44838700f757791e8675.pdf?index=trueIn PDF document text
    • http://zodiripek.myartsonline.com/benipu.pdfIn PDF document text
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_bc2318e63d4743febebdff4f9df679f2.pdf?index=trueIn PDF document text
    • http://jaziwovapotulit.epizy.com/job_interview_question_and_answer_in_english.pdfIn PDF document text
    • http://juduboferota.epizy.com/rijufali.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10223 5496 bytes
SHA-256: 9293077634575aa95de708b17b0fed7800ab0234e0b08f0c9a67ea2d780529dd
font_01_sfnt_off000114ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BA 12076 bytes
SHA-256: a0f0b014d8f2d732ea83c9fb0882c2561bf3206fc7862aeea3661f33a498f4a2
font_02_sfnt_off00013d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D5D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378