Malicious PDF — malware analysis report

Static analysis result for SHA-256 d05fd5d84263f8c8…

MALICIOUS

PDF

77.3 KB Created: 2021-03-11 00:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c9f063596fde35cae3f178a8c8699b10 SHA-1: 7d455a24a1abc0e58d2707568d72022d82688f98 SHA-256: d05fd5d84263f8c8f95df1ce1db182498a90de6b04550e4606c442c99b5a4df9
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a phishing site disguised as information for obtaining a driver's permit. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for credential harvesting or malware distribution. No scripts were extracted, but the presence of an external URI and the document's deceptive content point to a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/aws?utm_term=how+to+get+a+driver%2527s+permit+book
    • https://cdn-cms.f-static.net/uploads/4419654/normal_601cf2663a605.pdf
    • https://static.s123-cdn-static.com/uploads/4491437/normal_5fcb090e78735.pdf
    • https://cdn.sqhk.co/jiledexuda/Uv7xjfI/favovilupusememusajax.pdf
    • https://static.s123-cdn-static.com/uploads/4408324/normal_5ff28e776fef5.pdf
    • http://lipexifinidoda.scienceontheweb.net/45417532360.pdf
    • http://sosogemizibu.mypressonline.com/tovizemejofifunoxad.pdf
    • https://cdn.sqhk.co/xalesikozip/sgjgizI/80974369421.pdf
    • http://sevezor.scienceontheweb.net/64301948537.pdf
    • http://paxenazubenib.mygamesonline.org/jupixowaxisugeveboz.pdf
    • http://jolidulikan.scienceontheweb.net/journal_bearing_vs_ball_bearing.pdf
    • https://cdn.sqhk.co/kopilixa/idCFbjc/desert_animals_coloring_pages_printable.pdf
    • https://cdn-cms.f-static.net/uploads/4499633/normal_5fd7ce8431cf3.pdf
    • http://gilumesu.mypressonline.com/kitchenaid_double_oven_electric_range_slide_in.pdf
    • https://cdn.sqhk.co/niserutom/GcIGCjc/hack_idle_train.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pudosuvosav.atwebpages.com/joguxo.pdf
    • http://butorinowu.myartsonline.com/brs_gross_anatomy_questions.pdf
    • https://6a8c3f3f-5248-4e80-80e0-4bf2c04f72bc.filesusr.com/ugd/8b2c09_68fc0b942b7f41fcbb0adc5b320d7a06.pdf?index=true
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_bfd8c0b758ec4d1d92e91f1a3b0628f6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/f70c28e8-a48c-4f9b-8453-78508afef1dd/42718367573.pdf
    • https://uploads.strikinglycdn.com/files/38b7c76f-1b93-4dd7-a1c1-f84512bf98a6/casque_shoei_neotec_2_splicer_tc-6.pdf
    • https://uploads.strikinglycdn.com/files/b0205496-5d9f-4519-ad98-3a09d922bdc5/20778768581.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_off0000f11f.bin
d1c27f53201c7c4ed2226647fd73b9b516215c3cf527d06f6c7515e1f233d71a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF11F 5600 bytes
font_01_sfnt_off00010430.bin
3eaa06c371c324a9f4f8a67e7887914c5beb8e2f3401fcd1f8c7afd49432b02a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10430 10412 bytes

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