Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c6f43590c1ed13…

MALICIOUS

PDF

74.6 KB Created: 2021-04-03 02:34:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 53e0c808aa013c1dc2db1cde521008d6 SHA-1: 7a1d8760b21415197ed9cb7c5973c5e2589b37bf SHA-256: b3c6f43590c1ed13c405f8d69bb8e39f4aab360a5c938554a023cde50022f3a4
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. The document body, though heavily obfuscated, contains references to converting scanned PDFs to word documents, and an external URI points to a URL related to this functionality. This suggests a social engineering lure to trick users into clicking the link, which likely leads to a phishing page or a malware download. No scripts were extracted, but the PDF structure and external links are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/award?keyword=convert+scanned+pdf+to+word+with+ocr PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485799/normal_5fd9deb6a9ff1.pdfIn PDF document text
    • https://fibisozobafuraz.weebly.com/uploads/1/3/4/5/134529143/jefoz-nerubufinikupel-jawofirinigew.pdfIn PDF document text
    • http://rkconstructionsucks.com/jirowopefemiofy9l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424630/normal_600eb13a0b6f7.pdfIn PDF document text
    • https://cdn.sqhk.co/sativomofij/dghjg5n/dreamers_and_schemers_neck_gaiter.pdfIn PDF document text
    • http://tebifujokejub.22web.org/73528725203.pdfIn PDF document text
    • https://pigixona.weebly.com/uploads/1/3/5/9/135986477/9563637.pdfIn PDF document text
    • http://ziwixan.iblogger.org/area_of_polygons_worksheet_answers.pdfIn PDF document text
    • https://vogoniboka.weebly.com/uploads/1/3/1/0/131070279/kesibuj.pdfIn PDF document text
    • http://nelawetazabuta.66ghz.com/bexopuzon.pdfIn PDF document text
    • http://sks-expertiza.ru/what_is_in_chick_fil_a_waffle_frieseu8j6.pdfIn PDF document text
    • https://cdn.sqhk.co/rivotoxupow/jeihtih/jalezosuwinizopem.pdfIn PDF document text
    • http://wordsideget.top/3246765190800mwq.pdfIn PDF document text
    • https://garotilalu.weebly.com/uploads/1/3/0/7/130739336/kapumudezarebisa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://purevaxa.epizy.com/89506694898.pdfIn PDF document text
    • http://tikatogivuso.rf.gd/biblia_de_estudio_dake_en_espaol.pdfIn PDF document text
    • http://sabofakulivibav.epizy.com/47329430356.pdfIn PDF document text
    • http://xowofalofuzuxis.epizy.com/menuvejukagodukuzivalita.pdfIn PDF document text
    • http://vopapatadape.epizy.com/baxizeseliti.pdfIn PDF document text
    • http://lanadofebanubod.epizy.com/autodesk_fusion_360_for_hobbyist.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e62c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62C 5268 bytes
SHA-256: ff00ab135355258f4761032c3a5ac0a6a1d2ca76452752fbc551c3bb2b1036dd
font_01_sfnt_off0000f826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF826 10940 bytes
SHA-256: 422596ed3a074ab83a4482a564b9de594c9d275c1f8b3228f4030947a9f0fa47

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