Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d1879dbffdbe73…

MALICIOUS

PDF

84.5 KB Created: 2021-03-30 05:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8505c6be2649092ebae62c19e1c15600 SHA-1: 2f232faacd8ad998a82acc245e81db66ce01ec35 SHA-256: f0d1879dbffdbe73b07d5e53d92450c1bf741981420cb39bd369ccc3f5fde335
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'fokemale.ru', which is likely the malicious destination. The document body, though heavily obfuscated, suggests a lure related to a business plan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/strik?utm_term=plan+de+negocios+formato+excel
    • https://cdn-cms.f-static.net/uploads/4367925/normal_605842a650637.pdf
    • https://cdn-cms.f-static.net/uploads/4420248/normal_5fd931d7e9d53.pdf
    • http://gesetaxoxu.sportsontheweb.net/sarcoplasmic_vs_myofibrillar_hypertrophy.pdf
    • http://rozujed.sportsontheweb.net/camera_movement_types.pdf
    • http://lonotel.mygamesonline.org/48560472138.pdf
    • https://cdn-cms.f-static.net/uploads/4448337/normal_601b6eef5d1a7.pdf
    • http://wagikopegufiza.66ghz.com/95418649464.pdf
    • http://tapodozinojet.mypressonline.com/estudio_biblico_sobre_el_bautismo_en_agua.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gasodamuza/android_10_features_oneplus.pdf
    • https://uploads.strikinglycdn.com/files/4212cea1-544a-44a4-b542-8623fd068240/lirikavo.pdf
    • https://46c0acaa-de7d-4f46-84f0-c2cf1d8ff7d9.filesusr.com/ugd/ac1638_4235fc4adfd942b6ba638bacc1e9e538.pdf?index=true
    • https://abee6ad4-cf47-459a-954e-22b9b9bb30ad.filesusr.com/ugd/4bdc6d_536acf0158ea4e8389129ffec04bcf60.pdf?index=true
    • https://314a97e4-cc7b-499c-a999-42b15fb65c39.filesusr.com/ugd/fa4a73_b4ee4426887c44de8e5ed8296ae91e34.pdf?index=true
    • https://uploads.strikinglycdn.com/files/9ecded8b-145b-441b-9452-ea4504b254e7/dyson_cinetic_big_ball_animal_allergy_vacuum_no_suction.pdf
    • https://s3.amazonaws.com/xijalovelokolep/55923286622.pdf
    • http://xifeloj.onlinewebshop.net/gefenudakaramapadekivok.pdf
    • https://uploads.strikinglycdn.com/files/97386c17-9b34-4b7d-8880-95ba34c39546/9675785647.pdf
    • http://baxajuzurajuj.rf.gd/rogezudumolonaxiwawijit.pdf
    • https://uploads.strikinglycdn.com/files/441c21a2-d093-49e3-bbef-6d9c66055222/34096430706.pdf
    • https://uploads.strikinglycdn.com/files/f7fac81e-aa60-473a-9756-cacc84f71912/28207314347.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f57c.bin
5d43840f7d5babbb1465bfb869444f6fb6359f9a173155b8860bdd42bca39a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF57C 5412 bytes
font_01_sfnt_off000107d6.bin
0a6d129b700cf15ff623a58c5476ea5cdc471a68f0e0538ec6f56079750f40fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107D6 11636 bytes
font_02_sfnt_off00012df8.bin
df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF8 16060 bytes

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