Malicious PDF — malware analysis report

Static analysis result for SHA-256 babdb240ed1ad186…

MALICIOUS

PDF

82.0 KB Created: 2021-04-08 17:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f714502fa9e4f0ff787de54b24efa25 SHA-1: db9de7d85d499a312e568c1da8c9fb80e421898f SHA-256: babdb240ed1ad186bbfc0ba7c6020546b90f3f1da2294872751ed025b3835565
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution campaign. The document body, though heavily corrupted, appears to reference 'Next diary of a wimpy kid book 2021', suggesting a lure to attract user clicks. The presence of multiple external URLs further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=next+diary+of+a+wimpy+kid+book+2021
    • https://cdn.sqhk.co/kubemuzu/hZjhKid/wilebanovitaluxax.pdf
    • https://cdn-cms.f-static.net/uploads/4387235/normal_60629c6586e59.pdf
    • https://cdn-cms.f-static.net/uploads/4445868/normal_6068cd446110c.pdf
    • http://pifadopagel.scienceontheweb.net/27761600955.pdf
    • https://cdn.sqhk.co/niririga/hiiht6u/romance_of_the_three_kingdoms_chinese_text.pdf
    • http://wotukujis.sportsontheweb.net/carlos_castaneda_el_silencio_interno.pdf
    • http://paxenazubenib.mygamesonline.org/xujodejogale.pdf
    • https://cdn.sqhk.co/xejulonejo/hjc16id/zepolufesulotetibomezidi.pdf
    • http://wujejejifi.mygamesonline.org/bifagujolopelasupilun.pdf
    • https://cdn-cms.f-static.net/uploads/4453740/normal_6032bb0308bf4.pdf
    • https://cdn-cms.f-static.net/uploads/4443354/normal_6010f7e824d09.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dc95223b-9a80-4cbc-92f2-50ef875a5d6d/97407713293.pdf
    • https://uploads.strikinglycdn.com/files/d1f71913-971e-4710-b77b-6b732c2b674a/bissell_lift_off_pet_vacuum_belt.pdf
    • https://uploads.strikinglycdn.com/files/73181135-dfb1-4b4a-adbe-103dbfdf4b5d/how_do_you_write_a_copyright_example.pdf
    • http://lapetagalelan.myartsonline.com/karumutabekuxuzetuz.pdf
    • https://uploads.strikinglycdn.com/files/b4281972-4280-4fe4-b2c6-aef52ba3278d/what_is_the_main_theme_of_the_handmaids_tale.pdf
    • https://uploads.strikinglycdn.com/files/1a6e6fec-7fdc-4e4b-9080-a32fda9f667c/what_was_john_lockes_economic_philosophy.pdf
    • https://uploads.strikinglycdn.com/files/a06ae4a8-c2d1-4753-854d-abde567c96ec/the_gabriel_method_morning_visualization.pdf
    • http://xirozaza.onlinewebshop.net/wasefebuvewu.pdf
    • https://uploads.strikinglycdn.com/files/b27fcf0c-1b6b-46e1-9cb6-af1fddf7a3e4/1636481590.pdf
    • https://uploads.strikinglycdn.com/files/efd96c03-9598-4354-a1be-e34c18443cfe/what_is_the_book_of_3_john_about.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_off000100b1.bin
e59b09281bb9990b0a3c032695454efc6eb09ef29067f8a910eb09c3aee7ac13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100B1 5740 bytes
font_01_sfnt_off0001144f.bin
d412a8923476fa58905215ca2eaa6001d74779812709b08d2e6c6b10255f311f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1144F 10780 bytes

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