Malicious PDF — malware analysis report

Static analysis result for SHA-256 193cb38a3e79f95b…

MALICIOUS

PDF

75.8 KB Created: 2021-03-11 22:35:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 601579aade51b54d6d37335b741c742f SHA-1: 4ae7c01fc7da75e337132e8be715ad5c02241568 SHA-256: 193cb38a3e79f95bf8627a78feb7fa4726256c3f652de72d7fa3a21742138d14
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The document contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing attempt. The presence of external URIs and the overall structure strongly indicate that this document is designed to redirect users to malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/award?keyword=pathophysiology+of+asthma+pdf PDF link annotation
    • https://cdn.sqhk.co/simizekovogi/eidNur2/unacademy_learning_app_free_download_for_laptop.pdfIn PDF document text
    • http://legiontry.online/software_house_ccure_9000_downloadu2nna.pdfIn PDF document text
    • https://cdn.sqhk.co/devuzemalut/cjh0iiC/download_game_stick_empires_mod_apk.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/90398831016wmr2k.pdfIn PDF document text
    • http://womans30planet.com/las_barreras_de_la_comunicacion2sd6i.pdfIn PDF document text
    • https://cdn.sqhk.co/fazologim/jaiaehj/ifttt_trigger_alexa_skill.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/i9zggjM/89600847756.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_603f1f446eebf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472773/normal_6004eb940f2ed.pdfIn PDF document text
    • http://drive4mclanemilwaukee.com/tipogojupolisokotejugh1bqh.pdfIn PDF document text
    • http://iciko.xyz/workplace_chat_clientq9cve.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xexosekijifakam.epizy.com/what_was_the_topic_of_the_lincoln_douglas_debate_quizlet.pdfIn PDF document text
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_583b98269c2a4f1298c3cb69c0941d1e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b63589ef-7626-4436-9f30-2d35e02e50bf/53084170099.pdfIn PDF document text
    • http://jagogapibibolin.epizy.com/wupavatekifedejol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/699fc646-811f-4aa2-ac0e-3b46423fc97f/the_lady_with_the_dog_full_movie.pdfIn PDF document text
    • http://rusuxipek.rf.gd/risagimopupoziwoz.pdfIn PDF document text
    • https://9e1e9198-0fe7-4103-8084-fdcc6befb8d5.filesusr.com/ugd/2f7815_293f8439c7b7452ea82b9a4d5207c2e4.pdf?index=trueIn PDF document text
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_3f7356b063f2477e8c2fed50208762b9.pdf?index=trueIn PDF document text
    • https://0ef2f354-78a3-4528-990c-72f69c86fc6a.filesusr.com/ugd/6a0da6_3e765a1a8e2e481980c2cefe260f97a3.pdf?index=trueIn PDF document text
    • http://mafefelanepule.epizy.com/34477452685.pdfIn PDF document text
    • https://006b50d4-ad2a-4261-8279-34542eb0d7b0.filesusr.com/ugd/a640e9_d63d97d357264507b8d06b830e97324d.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED05 5464 bytes
SHA-256: 02b724944d535ed2b958bef7f999e657370d240c45e5a3701fd639595f662ec3
font_01_sfnt_off0000ff81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF81 10096 bytes
SHA-256: 17f968427affa14fdc7240d97d99760e79ca16b4835d94243e6f36478a5bb2ae

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