Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1941dbaf9651be…

MALICIOUS

PDF

71.7 KB Created: 2021-03-08 17:35:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18150bf20308b5d11a1f0b57ac6d952f SHA-1: b256605c3f86f16362802542852822026a84961c SHA-256: 6c1941dbaf9651be6451b69e88bbff796ebfc4c365a422c7498e625e59fbe70f
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to 'lozipotod.ru', which is flagged as a potential phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into downloading further malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=advanced+vocabulary+and+idioms+bj+thomas+pdf+download
    • https://juwomazitebuden.weebly.com/uploads/1/3/1/4/131414743/dab0aa1783b4a49.pdf
    • http://trysoda.club/90782945990me2zg.pdf
    • http://fajiriduxir.medianewsonline.com/why_wont_my_bradley_smoker_heat_up.pdf
    • http://lezigovedavide.getenjoyment.net/critical_thinking_skills_meaning.pdf
    • http://dumubemajizukov.medianewsonline.com/poputapoz.pdf
    • http://baykamif.space/buwozizopogapovt1og6.pdf
    • http://fabermanufacture.ru/aaoifi_accounting_standardsh7h5h.pdf
    • http://durebemidiges.getenjoyment.net/tekowomofijifazakejoda.pdf
    • http://pumba-timon.space/i_hate_you_please_dont_leave_meq5ubt.pdf
    • https://ruminugovukaka.weebly.com/uploads/1/3/0/7/130740017/tewariv_siseduke.pdf
    • http://marafonsport.site/86633357273hv87i.pdf
    • http://vubitim.sportsontheweb.net/music_guitar_chords_chart.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_836c473d49044b2bae3034712dff66f9.pdf?index=true
    • https://f0d5d368-f90a-442c-8bcc-30b0049ee060.filesusr.com/ugd/87b9a8_b71ad235edc64c1f9044eb5c586a5e01.pdf?index=true
    • http://fataragoreb.myartsonline.com/why_cant_i_use_my_hotspot_with_straight_talk.pdf
    • https://uploads.strikinglycdn.com/files/42f07dfb-8186-4076-b640-645cdc5daa43/oklahoma_drivers_license_cdl.pdf
    • https://uploads.strikinglycdn.com/files/04b69964-8d21-48da-9e89-76360e9ce609/mobami.pdf
    • https://814cba0f-f649-4223-bfe6-7884e6e02b9d.filesusr.com/ugd/c1108c_2e87aec94d1d43bbbf3cefd104512136.pdf?index=true
    • https://uploads.strikinglycdn.com/files/604b592e-6047-4a98-90c2-b775b997b4e0/why_do_i_feel_pain_when_i_see_someone_hurt.pdf
    • https://uploads.strikinglycdn.com/files/b581d463-0c28-4e69-abd5-371aa213b31a/laratopukifejajowekevid.pdf
    • http://xolavozezimodan.onlinewebshop.net/67953287358.pdf
    • http://pozidijapepore.atwebpages.com/71862460962.pdf
    • https://0dd0cd87-80d3-4eb5-b9c6-73c43c3a6fca.filesusr.com/ugd/f0b6b3_fa16b67040ae4e0aa70dfc94972ac151.pdf?index=true
    • 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_off0000d961.bin
11c5324aaff3c412e6f2da70574b4bd6388e628115a14b82104cf33682b6e345		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD961 5852 bytes
font_01_sfnt_off0000ed3d.bin
481c0d239fb4de4f6fb8421e4320c888a609e7f8fa1b4c17ef45698185220dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED3D 10628 bytes

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