Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3675b3228277ef…

MALICIOUS

PDF

90.2 KB Created: 2021-03-31 12:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4668f01173476fb606d35a682b57548c SHA-1: 14bd5d72c1a36814571568a895f34eda44f2ae05 SHA-256: dd3675b3228277ef960609d242442033374f2dc7c64b86e2293fd60074d34cb7
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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 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://midufefew.ru/wix?keyword=adobe+illustrator+cracked+reddit PDF link annotation
    • https://cdn.sqhk.co/nowonipewo/hdqLbgf/rokutetoniwuwaberumoliror.pdfIn PDF document text
    • https://kuxubujokug.weebly.com/uploads/1/3/0/7/130775750/4106445.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/samuel_beckett_bridge_moving.pdfIn PDF document text
    • https://motuzepiruwilo.weebly.com/uploads/1/3/4/3/134348631/e3681fb.pdfIn PDF document text
    • https://cdn.sqhk.co/rizitewav/gfhajh3/oxygen_atomic_structure.pdfIn PDF document text
    • http://bibivire.mygamesonline.org/85832562989.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/69363112877.pdfIn PDF document text
    • https://cdn.sqhk.co/dijabidasu/Bjcfggs/vipisonasizeruma.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/VgeQTig/best_escape_game_520_saltwater_crocodile_rescue_team.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuniruf/hdPBgh9/interstellar_dust_definition_in_astronomy.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/maytag_bravos_xl_washer_error_code_ul.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/lowurizagame.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/wokukabizasowedogopat.pdfIn PDF document text
    • http://juwaniwabi.medianewsonline.com/josikebadaruferafin.pdfIn PDF document text
    • https://jetijejage.weebly.com/uploads/1/3/4/3/134319548/wotizalezuzifab_jasoguzus_zebononixedowov.pdfIn PDF document text
    • https://mugunerer.weebly.com/uploads/1/3/4/4/134479547/gunagul_linuxuga_divowew.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/daniza-gojaloto-nijur-zekazadevosos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/9d592e6d-39ca-438a-b606-85c7399a9191/rslogix_5000_vs_studio_5000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4618854-35a9-4f50-99f6-12be224fc866/nuvipejagavawex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5ac63a9-3da3-4751-8c86-b9996bf159db/sierra_bullets_reloading_manual_2nd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f57e21a-ac41-4dc6-94d5-e96bb43462e0/functional_exercises_for_seniors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f879176-3dae-45d4-8b82-cc4af3d54afc/18003033743.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100C7 4904 bytes
SHA-256: 089c45e3aa5176efeeacc0012ef8a8e023c94ebff6e91bbbd50adb16edd5f055
font_01_sfnt_off0001117f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117F 11040 bytes
SHA-256: 92ba2e78472a8e8b076b22acfee07b9c26d492bbd99bbbf002d056aaf6cf54c3
font_02_sfnt_off00013755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13755 16224 bytes
SHA-256: c4441e48b2f68604838bd51e3092d1355fc6ad73caca962ec91191dcf11ac5c9
font_03_sfnt_off00014c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C7C 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176