Malicious PDF — malware analysis report

Static analysis result for SHA-256 17936059499d9d01…

MALICIOUS

PDF

74.2 KB Created: 2021-03-02 10:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 15e272e24094840fd9bad359897e9881 SHA-1: 9ed13c8d2172e4a77d78bd853c7bc49daa3dbcaf SHA-256: 17936059499d9d01eb2178b932ccf4f6ca4329229d2d73c479452fef6dd67b6d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, vilenefex.ru, which is likely used to host a malicious payload or phishing page. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest this PDF is designed to trick users into visiting a malicious site, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/wb?keyword=the%20raven%20poem%20by%20edgar%20allan%20poe%20pdf PDF link annotation
    • https://cdn.sqhk.co/xejexeremiso/fLbuMaw/sipagi.pdfIn PDF document text
    • https://cdn.sqhk.co/nezotelo/epemvjd/73267545750.pdfIn PDF document text
    • http://safijejog.mygamesonline.org/their_eyes_were_watching_god_chapter_10_quotes_and_analysis.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/dogedinisavakogawunule.pdfIn PDF document text
    • http://koxelovanalimu.getenjoyment.net/vudolimo.pdfIn PDF document text
    • http://tijudiwulewanuw.getenjoyment.net/98111215154.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/who_is_the_strongest_deity.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/ravuxudibure/97424654339.pdfIn PDF document text
    • http://mamejug.epizy.com/dream_meaning_death_of_a_pet.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/haunted_taylor_swift_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/script_type_template_html.pdfIn PDF document text
    • http://tufozep.epizy.com/37586384814.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/vidmate_2017_free_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/sc_hunters_ed_quiz_answers.pdfIn PDF document text
    • http://mebupeb.rf.gd/tabaf.pdfIn PDF document text
    • http://nakobebujem.epizy.com/new_tamil_movies_2019_in_tamilplay.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/70855366887.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_off0000e56a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56A 5528 bytes
SHA-256: 6b9c9c3caee85bc4cbb530e85b0060e55366c3236157170d43a3df8e15717632
font_01_sfnt_off0000f81a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81A 10748 bytes
SHA-256: fca99f5bf7c9ef4b3d3a0b4c81ddf858cc53f37e0c7a0f2fef57df30445ea8d7

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