Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d6c0dea5a2392a…

MALICIOUS

PDF

81.3 KB Created: 2021-01-30 15:06:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e4a06b173df61ba4c611b7dfbf7e7798 SHA-1: aecffb5c36a741ef945f9e074631fdb94d46eab6 SHA-256: 84d6c0dea5a2392a8db95adeafb55321b19f87118bef1d2f9acf804b9ea27953
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though partially garbled, suggests a lure related to financial affidavits, and the presence of numerous external URLs, including one with a 'utm_term' parameter suggesting tracking, points towards a phishing or malicious redirection attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the malicious intent by indicating a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://crophysi.ru/123?utm_term=florida+financial+affidavit+long+form+excel PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490515/normal_60033cf0199c0.pdfIn PDF document text
    • https://fodonisegijiwos.weebly.com/uploads/1/3/1/4/131437376/jerulaxonib.pdfIn PDF document text
    • https://wujawosekeg.weebly.com/uploads/1/3/4/7/134712458/xozapasuxed-vasatunobat.pdfIn PDF document text
    • http://excschool.ru/bifokasviuwa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fe05ceaa09c3.pdfIn PDF document text
    • http://womenit.space/mivuxakoziwolijrm8y9.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/igKhjge/farm_heroes_saga_tips_and_tricks.pdfIn PDF document text
    • https://roxobirunuj.weebly.com/uploads/1/3/4/0/134096027/9963394.pdfIn PDF document text
    • http://hookup154.space/christmas_carols_jazz_guitar_chord_melody_soloss586w.pdfIn PDF document text
    • http://chempion.coffee/764925527977c9mu.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/7uHCnKU/14250157378.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/coppelia_mazurka_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/67654749488.pdfIn PDF document text
    • http://nupejodolet.epizy.com/43837848277.pdfIn PDF document text
    • http://fapibudu.epizy.com/nafixefapizosilag.pdfIn PDF document text
    • http://vavilonogamet.epizy.com/miwedegup.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/62493493768.pdfIn PDF document text
    • http://wuxigukupem.epizy.com/angular_6_global_variable_in_template.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF735 5248 bytes
SHA-256: 912b1a336f7b161e58594d281fdc91eb404deed928ed296996e912698935cd89
font_01_sfnt_off0001090a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090A 14020 bytes
SHA-256: d34e7c4a80884a799a247a829187f66efcbea27a04ea5c630735bbe8994c87b2

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