Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fdb38485843aa32…

MALICIOUS

PDF

93.0 KB Created: 2021-03-14 11:09:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6dc7a979fc58c6f20f540f295a64a068 SHA-1: 908a54218bd2d2974d8f57367fc5df13fe9dc874 SHA-256: 7fdb38485843aa32ce24a932aea43376e0b094fd47c19581510b2a918b9f123f
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for distributing malware or conducting phishing. Heuristics indicate a link farm on disposable hosting, suggesting malicious intent. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a lure to download further payloads from the identified URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wix?keyword=comparing+hinduism+and+buddhism+worksheet PDF link annotation
    • http://feludekinopotas.scienceontheweb.net/97914528112.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/wanifalomazerojovebi.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/73801101632.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/2019_ka_naya_calendar.pdfIn PDF document text
    • https://cdn.sqhk.co/xurajalijok/8DhgGBq/94441833557.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/hM1gigh/lisigedamezegativenativu.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/gLI03j0/logudemuxejoxofamibexebir.pdfIn PDF document text
    • http://sajutasure.22web.org/neposabikibeluzar.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepilekot/hUig9ic/mass_from_sharepoint.pdfIn PDF document text
    • https://cdn.sqhk.co/tokebamojos/TVKidgr/freeway_closures_5_north.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/blacklist_episode_guide_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_b15d99fc2db2453f95b04efb4168ce81.pdf?index=trueIn PDF document text
    • https://84d5b3ab-51dd-4312-87b7-51df18fb3b26.filesusr.com/ugd/9ea9b6_95a74007b91040d0925a940fda5075c7.pdf?index=trueIn PDF document text
    • https://5e024257-ca51-40df-b6b5-a3104c7b7124.filesusr.com/ugd/97368a_bb9563ccaf744761bd8c26cfafbcfaaf.pdf?index=trueIn PDF document text
    • https://d3dd75b0-514a-4dbf-a1f7-973a5b421fb1.filesusr.com/ugd/5b46ec_9061af31f18541e0b4a37c296e90cf68.pdf?index=trueIn PDF document text
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_c056d188ecea40169a7a649461776f3f.pdf?index=trueIn PDF document text
    • http://xirexadugimog.atwebpages.com/kitchenaid_artisan_175_stand_mixer_ice_blue_5ksm175psbic.pdfIn PDF document text
    • http://kofepiropi.onlinewebshop.net/96062181328.pdfIn PDF document text
    • http://nadiripu.epizy.com/javuv.pdfIn PDF document text
    • https://d0bf7e8b-5449-41c0-93e9-161603c0719f.filesusr.com/ugd/197ed4_33550acd733148e38ce15b5759a8d0c2.pdf?index=trueIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10364 6440 bytes
SHA-256: 705377623a4c4344e02470fedf876d1ed6f0c7c0eac322cafb15afc9430d14bf
font_01_sfnt_off00011358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11358 5544 bytes
SHA-256: 94a27fd490fdd9efd05ed232cb177b58c18b736439ccc8705f44313437604760
font_02_sfnt_off00012606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12606 12256 bytes
SHA-256: 3d05b3fe462d2dfafd6717e66c283c6cdef2aa91a73d3efaa8ae6bb686f02789
font_03_sfnt_off00014fdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FDB 16232 bytes
SHA-256: d8949076153b506d0263e7f774c3afe225f31c34230a03cbf93bb85259a13da0

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