Malicious PDF — malware analysis report

Static analysis result for SHA-256 59787f570a35fb90…

MALICIOUS

PDF

75.7 KB Created: 2021-06-06 22:31:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8011862268e09cfd99413cd37269ecbb SHA-1: ec546e486b0cb96b6b8836b7fb81faf0f54a534e SHA-256: 59787f570a35fb9064b7b0abfdf709eed362f767762ed3ec95d2adac8bba678b
136 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's a phishing lure for a password-protected archive. The embedded URL points to a resource that could be used to disguise malicious intent. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used for malicious redirection or payload delivery.

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://oniceh.ru/pbw?utm_term=unchain+my+heart+piano+sheet+music
    • https://tosofovopige.weebly.com/uploads/1/3/3/9/133998067/xaluxakimev.pdf
    • https://cdn-cms.f-static.net/uploads/4450045/normal_6029797a56acd.pdf
    • https://cdn-cms.f-static.net/uploads/4421640/normal_601f38795ba49.pdf
    • https://zojovotonoturur.weebly.com/uploads/1/3/5/3/135348007/6223651.pdf
    • https://cdn-cms.f-static.net/uploads/4463306/normal_6041920e3a802.pdf
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5fcd6fd8a2c22.pdf
    • https://xetamoro.weebly.com/uploads/1/3/2/8/132815737/8012357.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://joxupakager.pbworks.com/f/que_significa_el_arco_iris_en_la_biblia_catolica.pdf
    • https://uploads.strikinglycdn.com/files/2af663dc-3431-42f2-8fc7-b19fe0f0d434/dd_wrt_default_wifi_password_netgear.pdf
    • https://uploads.strikinglycdn.com/files/f08c4906-1b0a-49f7-93cf-a739554ffaff/vuxuganababebofile.pdf
    • http://detomipipu.pbworks.com/w/file/fetch/144509652/nebepufimamenumiga.pdf
    • http://zepadatoju.pbworks.com/f/what_is_high_level_design_and_low_level_design.pdf
    • http://refarumiba.pbworks.com/w/file/fetch/144676440/xipufara.pdf
    • http://kalunagepigi.pbworks.com/w/file/fetch/144425049/darazakoxo.pdf
    • http://jinotofatum.pbworks.com/f/content_practice_a_lesson_3_dna_and_genetics_answer_key.pdf
    • http://pevozowo.pbworks.com/w/file/fetch/144423927/fce_for_schools_practice_tests_2019.pdf
    • http://minuwaxiper.pbworks.com/f/51464723754.pdf
    • http://vimadutukad.pbworks.com/w/file/fetch/144444093/yo_persigo_una_forma_ruben_dario.pdf
    • https://uploads.strikinglycdn.com/files/0ab9bbb4-925a-43f4-8527-e53a931b687a/78625222675.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebe8.bin
ee237da1ce485eb4f19f47178acd288c554ae8b19fc248be1818299b90f462ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE8 5236 bytes
font_01_sfnt_off0000fd95.bin
12e48b55a66b3d59cc95eee110e89a5fdf5dabcde901e7f068352f94bbb4f0bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 10516 bytes

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