Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64b8dd38b4aedfd…

MALICIOUS

PDF

94.2 KB Created: 2021-03-27 12:04:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ba904ff2ff0c2affaf7796b5bb0daae SHA-1: 7f364370b2c67a635de884a55e84f70d8adc5699 SHA-256: f64b8dd38b4aedfddf44105a2ac22ab862384f335625ba49afe968bc6f858758
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests it is designed to redirect users to malicious sites. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://bologen.ru/award?keyword=73+and+74+constitutional+amendment+in+telugu+pdf PDF link annotation
    • http://mgacessoria.online/denidoxetu2zsp7.pdfIn PDF document text
    • http://supportcopyright.net/2189525595h6pt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387929/normal_5fd048752eb3f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5fddcb1b37f0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419623/normal_5fe1436e547e4.pdfIn PDF document text
    • http://googsnat.space/red_shift_blue_shift_worksheet_answersyjg0a.pdfIn PDF document text
    • http://jsexj.fun/buet_admission_online_formcjke8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_603e7df111903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417983/normal_60507b8e4ba8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385206/normal_6037e54103cf0.pdfIn PDF document text
    • http://rawiduti.medianewsonline.com/memorandum_articles_of_association.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_5fdafe3fd4f9b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://e7ba4f66-d023-404d-a355-a5b98970f127.filesusr.com/ugd/cac9e4_9fdb93ae3fc745aea7a38ed91bdbe559.pdf?index=trueIn PDF document text
    • https://f1e11ea9-a931-46ad-af30-391325c877dd.filesusr.com/ugd/423518_e9e38135c4eb4da2b41cb704b85cdb8f.pdf?index=trueIn PDF document text
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_b95615702bb74b29983e92d39e3bcd63.pdf?index=trueIn PDF document text
    • http://karuriletepet.epizy.com/market_guide_for_asset_performance_management.pdfIn PDF document text
    • http://kususen.myartsonline.com/manual_apqp_portugues.pdfIn PDF document text
    • http://gikekim.rf.gd/40523831810.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_off00010d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D36 5616 bytes
SHA-256: 440c4062216cb789703cc7d27e6022a66df5b80add5e7090cee72a588b678967
font_01_sfnt_off00012055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12055 14220 bytes
SHA-256: a19fca02850273f205a828b379148da6d9996aa4968adcbfe511300251ea7a60
font_02_sfnt_off0001445a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1445A 10764 bytes
SHA-256: 979f0c4ecbb20fe004b28da09deae75184b8081230ee4e716a8cc957b0bcf80a

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