Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c3eabb2c13dbf7…

MALICIOUS

PDF

90.2 KB Created: 2021-03-19 07:14:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7107f84e4bbc3a9535bedbb48a57ee1f SHA-1: 59496246f007e11de5a48bc23122df8e32b05d38 SHA-256: 62c3eabb2c13dbf71b30d94dcbd895c68063c47bbc56144b713ae37c7dfecc32
184 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains embedded URLs that redirect to known malicious infrastructure, indicating a phishing or malware distribution attempt. The presence of a malicious redirector link suggests the PDF is intended to lure users to external sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=realidades+capitulo+4a+answers In PDF document text
    • http://winnerslm.space/430128212c5zya.pdfIn PDF document text
    • http://shopsupergood.site/95059956824jbgvt.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvuwoki/gcVjgvC/letter_declining_an_invitation_template.pdfIn PDF document text
    • http://magazinrf.xyz/roxivezifefogo7blj4.pdfIn PDF document text
    • https://cdn.sqhk.co/nojebimit/jgxifJb/build_royale_games_unblocked.pdfIn PDF document text
    • http://manthoughtswebsite.website/lean_management_system_examplesgks0v.pdfIn PDF document text
    • http://duplicwcnj.space/191014934890bzby.pdfIn PDF document text
    • http://iclod.tech/inkscape_free_download_windowseuqgr.pdfIn PDF document text
    • http://mobeditobaxul.scienceontheweb.net/90247039804.pdfIn PDF document text
    • https://cdn.sqhk.co/jobubexivex/gehcjgh/lumberjack_winterset_iowa.pdfIn PDF document text
    • http://hookup756.fun/78470294844k0xie.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/iiX09gi/jurassic_kingdom_crazy_golf_lanzarote.pdfIn PDF document text
    • http://electorat.org/87941372584i8t64.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/doxifuba/real_ghost_stories_fear_files.pdfIn PDF document text
    • http://fixiwajavonuti.atwebpages.com/ceo_telangana_form_7.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab01ae49-39a5-4d07-824c-e1329834861b/samsung_refrigerator_model_rfg298hdrs_xaa_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/82041399572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ff3f513-4684-49ba-95a6-73fecb95414f/ver_pelicula_un_puente_hacia_terabithia_espaol_latino_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f9dc73d-3236-4f00-b346-93d1c9da2eb4/25284156958.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_off0001172b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1172B 5252 bytes
SHA-256: 181bdc7c755d782ea5eb131d499ea48c3ab0e152a0fd0d8744b3a9e736df7622
font_01_sfnt_off00012936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12936 17008 bytes
SHA-256: f0597ad97ae3a29c0909e52a6e71c73e713ebb17262901e7764bf3fbd70de6b8

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