Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32767f321b4b64d…

MALICIOUS

PDF

79.2 KB Created: 2021-02-27 10:50:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ef3d7bd082f2e3a332ccd7cd4345818a SHA-1: ab37dd4d28db946db2e2df0805cd4cbdcb2e7e29 SHA-256: a32767f321b4b64d0fb7c58fb9c45c5afd002ef3a88529e6cf2ffdd1ac4f39bd
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs, including one hosted on disposable infrastructure, suggesting a link farm or phishing attempt. The PDF's content, though heavily obfuscated, appears to be a lure related to a manual, directing users to external URLs for further interaction. No scripts were extracted, but the PDF structure itself facilitates redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wix?keyword=ti+nspire+cas+ipad+manual PDF link annotation
    • http://dalifajebuxog.scienceontheweb.net/60482472634.pdfIn PDF document text
    • http://detobusukited.iblogger.org/euro_truck_simulator_2_game_activation_key_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_601ad3478c849.pdfIn PDF document text
    • http://dazenad.iblogger.org/zabidawugugimukomos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449406/normal_600c71a04d21c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372377/normal_5feb047c4b74b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426280/normal_603175d2d0941.pdfIn PDF document text
    • http://xepomujix.22web.org/operating_budget_template_for_nonprofit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://diwigivexuvobe.epizy.com/wowugowutuserilij.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/what_types_of_intermolecular_forces_are_present_in_ammonia.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/2424619588.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/aasl_standards_framework.pdfIn PDF document text
    • http://xorikija.epizy.com/bold_text_span_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/missed_abortion.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/pokemon_ultra_sun_and_moon_strategy_guide_collectors_edition.pdfIn PDF document text
    • http://tipunif.epizy.com/prime_factorization_worksheet_6th_grade.pdfIn PDF document text
    • http://volajigatume.epizy.com/94824984585.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE858 5168 bytes
SHA-256: e5ce2cca5570bee6faf2990a9b3322d3cc9152bb59ca7c6c17850ec7070069d5
font_01_sfnt_off0000f9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C7 6068 bytes
SHA-256: 58b4873d33ac9fffaf45ed1a2312b8eb5fadf3b067e77f8cfe9e87095f6a7717
font_02_sfnt_off00010978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10978 11080 bytes
SHA-256: b3cb3fc15b99c07f8cfea028be4a089ee4e679fcbc00afce22c1e53e40a6a353

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