Malicious PDF — malware analysis report

Static analysis result for SHA-256 db9617c6bc641641…

MALICIOUS

PDF

78.0 KB Created: 2021-02-25 19:02:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 00f19404dc59b42fb2e2d627bce1d602 SHA-1: d963ade1f388f307a909e239661d8ba0108df1c5 SHA-256: db9617c6bc6416416cd69dca603cfb78a5be1128dda84789e97aadcb65a597d9
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to 'https://leonvi.ru/wix?keyword=igbo+culture+male+gender+roles', which is likely a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=igbo+culture+male+gender+roles PDF link annotation
    • http://uuuuull.space/what_type_of_sensory_neuron_would_likely_respond_to_the_green_lightqufcv.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/Qgc91eJ/givexavexekodez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454419/normal_602a2ef192cb0.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/ijiKghg/stickman_sponge_rope_hero_gangstar_crime_sim_apk.pdfIn PDF document text
    • http://feelslike35.com/heart_piece_guide_majora_s_maskez7k2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496389/normal_5fd90a828f148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451019/normal_602b53e84a018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491426/normal_5ff3b60565f82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382770/normal_6004390ed4dfc.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/kozibowisenatu/good_antivirus_for_android_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/chemistry_a_molecular_approach_4th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/anatomia_cara_y_cuello.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/extension_methods_c_programming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/makevedepinalebexek.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/commando_game_for_android_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/oscilloscope_android_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/valuation_of_assets_and_liabilities.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_off0000f459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF459 5336 bytes
SHA-256: 9264ef2420539524469eadc075ee2878b248c6796675b88307a433a5053fc3ef
font_01_sfnt_off00010669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10669 10572 bytes
SHA-256: a14f93396f22732e1c87c85abfe83d54a77a05aa526265258a3ce041d97c6a24

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