Malicious PDF — malware analysis report

Static analysis result for SHA-256 93904e6378c94672…

MALICIOUS

PDF

172.6 KB Created: 2021-03-15 14:53:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36a3dbebec5b2ec8d116f8c9af240421 SHA-1: 818aaf6244af39001b128985beb2ececa00601c3 SHA-256: 93904e6378c9467222f4ee877b0d0965e51cc187631ac4d96855396d13243757
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by a machine learning classifier and ClamAV, with specific heuristics indicating an advance-fee scam lure. The document contains an external URI pointing to a suspicious domain, likely part of the phishing infrastructure. No scripts were extracted, but the presence of multiple embedded URLs suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://kuzutuzo.ru/wix?keyword=shin+megami+tensei+persona+4+guide
    • https://cdn.sqhk.co/fularulojoze/ihSmLDk/lesson_plan_ideas_for_september.pdf
    • http://telovajov.medianewsonline.com/bazinozo.pdf
    • https://tefewijinoxo.weebly.com/uploads/1/3/4/8/134881123/waxevozubebekagijomo.pdf
    • http://metryck.info/lexus_rx_350_price_canada_2019az0sl.pdf
    • https://kukevukoleguko.weebly.com/uploads/1/3/4/2/134265740/18e50.pdf
    • https://fiwarurebel.weebly.com/uploads/1/3/2/8/132814972/5260709.pdf
    • https://biwakegexenulu.weebly.com/uploads/1/3/4/4/134437141/kafotufamof.pdf
    • https://cdn.sqhk.co/dixejetafap/gfidOzR/8248514116.pdf
    • http://zomoxoxuriw.mypressonline.com/mulching_blades_for_john_deere_60_inch_deck.pdf
    • http://pawusewi.sportsontheweb.net/anime_characters_birthdays_in_march_12.pdf
    • http://erogan24.website/english_talking_practice_appgtul0.pdf
    • http://jokojujut.medianewsonline.com/sefiv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lurarapekakaka.atwebpages.com/biology_abc_book.pdf
    • http://kofaxafogi.myartsonline.com/swann_1080p_spotlight_outdoor_security_camera_review.pdf
    • https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_c5956ef2443f402a9f1eca6e0a4a47c4.pdf?index=true
    • http://taberadajip.atwebpages.com/3843344894.pdf
    • https://f579be4a-c2ec-451d-94ee-532237c06880.filesusr.com/ugd/9f6a24_cf7ed0465165453795104ae5eb0a9a1d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e797.bin
f605d0dfb9d36306bab83b1055895337305e182807ac37341390a5d1e9378311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E797 42500 bytes
font_01_sfnt_off00026a86.bin
2d41d017435bebdfb82e344767893893d256bfbe9c3c7630b19b4982fe8eccdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26A86 5532 bytes
font_02_sfnt_off00027d2e.bin
68b0efa8feb67c67276ec0ec2779fce190bbcc3e77da871ed16ee024942530b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27D2E 11752 bytes

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