Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cda1f7031ccfb2d…

MALICIOUS

PDF

81.8 KB Created: 2021-02-27 01:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 17d287f62e0c97adfad8d09d2afa20ec SHA-1: 434a3c0b6218d86739f6476f4c1c73c34ad67df8 SHA-256: 7cda1f7031ccfb2dd6dd661cf286bc64e839abea0575e021f22d205ae140974c
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one prominent URL pointing to a "subway surfers hack mod apk download". Heuristics indicate the PDF is a link farm hosted on disposable domains, and ClamAV detected it as a phishing trojan. The ML classifier also strongly flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://gimoguvi.ru/wix?keyword=subway+surfers+hack+mod+apk+version+2.2.1+download PDF link annotation
    • https://lanasasaf.weebly.com/uploads/1/3/0/8/130815311/5223de911b.pdfIn PDF document text
    • https://zuwiwenulabir.weebly.com/uploads/1/3/1/3/131381762/gewatadajakope-vodenoz-dowunavuzirik.pdfIn PDF document text
    • https://gowumobajakexe.weebly.com/uploads/1/3/4/5/134585768/ruxuxu.pdfIn PDF document text
    • http://didopikorubozav.iblogger.org/bakezijarikagudorir.pdfIn PDF document text
    • https://kadeborejegan.weebly.com/uploads/1/3/2/7/132740978/24dbfc5c9e2c.pdfIn PDF document text
    • http://innov-cis.net/manual_autocad_electrical_2018_espaolvsgf7.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/65884200181t7hgd.pdfIn PDF document text
    • https://cdn.sqhk.co/ziveluki/ijjhd9B/bike_race_today_near_me.pdfIn PDF document text
    • http://fishing-rods2.club/alien_shooter_game_apktydzs.pdfIn PDF document text
    • https://rakafofolobe.weebly.com/uploads/1/3/4/6/134649319/kijezevil_pupufam.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxafopagad/StPijI2/pound_cake_recipes_using_cake_mix.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/aQIisha/tower_fortress_full_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jugikan.epizy.com/66373683660.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/aha_cpr_guidelines_2018_infant.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/celia_sakamoto_discografia.pdfIn PDF document text
    • http://kupaxomuwekag.epizy.com/marxism_leninism_study_guide.pdfIn PDF document text
    • http://rinudesit.epizy.com/jibataxapurateniwedugit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6B 6172 bytes
SHA-256: 5ddab6f34e0c1bfa47f4132139c8c1f70ce26fb1ab0ca171e2622849c052aaf6
font_01_sfnt_off0001006d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006D 10580 bytes
SHA-256: 0c834fcc05938018141aa1c5618f4bcb1c1181ee891f5234e30645afc34d0a95
font_02_sfnt_off000124a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A5 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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