Malicious PDF — malware analysis report

Static analysis result for SHA-256 45e08678fca28249…

MALICIOUS

PDF

72.2 KB Created: 2021-03-12 00:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b78a2d8e53c7fd9196b060e07d86504 SHA-1: b23ebf43778f8b0ed53525163ae399a86c5b59f1 SHA-256: 45e08678fca28249679c2162f8ce5361c8396f9e9989cd456bff0990484646ba
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the presence of an external URI points towards a phishing or credential harvesting attempt.

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://leonvi.ru/award?keyword=acrylic+paint+techniques+pdf
    • https://cdn-cms.f-static.net/uploads/4463825/normal_5fd64d18d1ea3.pdf
    • https://static.s123-cdn-static.com/uploads/4401519/normal_6007a051eef47.pdf
    • https://static.s123-cdn-static.com/uploads/4489415/normal_5fe59398db421.pdf
    • http://gesemalisezusa.iblogger.org/35301241808.pdf
    • https://cdn-cms.f-static.net/uploads/4425484/normal_5fd2ccde285a1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/71ee6e64-605d-4898-8f43-30e9b0ac7701/91363290369.pdf
    • http://buwepuxaj.epizy.com/extracurricular_activities_game_darius_guide.pdf
    • https://uploads.strikinglycdn.com/files/18d835f3-4ee4-4263-ac86-cda82468dc11/survival_of_the_fittest_synonym.pdf
    • https://uploads.strikinglycdn.com/files/be2c3fa8-8036-44c6-8fee-b7197022611b/solving_simultaneous_equations_one_linear_and_one_quadratic_worksheet.pdf
    • http://punifuxuwepiti.rf.gd/80782960484.pdf
    • http://videfenesidi.rf.gd/natiniraxegizowilelafuzi.pdf
    • https://uploads.strikinglycdn.com/files/15fab5e8-262a-4d92-b24d-e9693daa82cb/great_books_for_young_adults_2020.pdf
    • https://uploads.strikinglycdn.com/files/f06a827c-ca73-4390-af3c-1e6ebac5bfbd/rogoxawedisomukopaxofatu.pdf
    • https://uploads.strikinglycdn.com/files/76e8aee9-68ac-43c0-b587-11150e3914cb/the_five_love_languages_book_online.pdf
    • https://uploads.strikinglycdn.com/files/930803a6-f885-45ef-9ca8-6bde4b320e61/los_7_habitos_de_la_gente_altamente_efectiva_google_drive.pdf
    • http://fexajorijoworas.epizy.com/zexol.pdf
    • https://uploads.strikinglycdn.com/files/4b07bee5-6a04-4f8f-8640-a697f292d1e9/puwirorikanusuponuli.pdf
    • https://uploads.strikinglycdn.com/files/eb099100-f5fd-40a7-8380-6ae8d2333133/attack_on_titan_season_4_episode_3_explained.pdf
    • https://uploads.strikinglycdn.com/files/e2cd774d-b99a-4ba3-9e23-ff9a63124705/dasenakofonizin.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_off0000dea2.bin
372540b774c653286d5362fd6bb3dd2ab4931d478f8b8c3025f282c88e27cc10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA2 5460 bytes
font_01_sfnt_off0000f133.bin
bbb977c4f26f98d73bcda4f5f6ba8b8211a8a7ff09fb6ca02b1f8860e99cbc1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF133 10112 bytes

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