Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da98de63f23f0aa…

MALICIOUS

PDF

111.2 KB Created: 2021-03-22 16:45:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c57fb5cb49f1b29cc84b989b007c3fbb SHA-1: 53e18db501535bdef80f8798691fbf52905e87c9 SHA-256: 7da98de63f23f0aaf25f2da27feb2dcc97492ecb751facea5aefd2c7e90151c3
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and embedded URLs, with one primary URL being https://ponafet.ru/wix?keyword=nuwave+elite+oven+manual. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a social engineering attack to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/wix?keyword=nuwave+elite+oven+manual
    • https://cdn.sqhk.co/vipujitebiki/ib3NdJh/clear_plastic_screen_guard.pdf
    • http://xosuxifareg.22web.org/mugatego.pdf
    • https://cdn.sqhk.co/dutaxato/LZq1sha/free_chat_rooms_to_make_friends.pdf
    • https://cdn.sqhk.co/puxedimuwo/kgigija/vujopiwozixezoniregosavux.pdf
    • https://cdn-cms.f-static.net/uploads/4389097/normal_60115130bda57.pdf
    • http://lelazuw.iblogger.org/kuxuxifotetebudiram.pdf
    • https://cdn-cms.f-static.net/uploads/4369511/normal_5fdb0d025793c.pdf
    • http://xobalaxu.22web.org/badminton_game_rules_and_regulations.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dezagifuten.rf.gd/how_to_fix_mitsubishi_electric_air_conditioner.pdf
    • https://uploads.strikinglycdn.com/files/75745c4b-523c-4acb-9dc6-0197179e9bfb/solving_quadratic_equations_by_completing_the_square_worksheet_answers_algebra_1.pdf
    • https://s3.amazonaws.com/vuxirefare/20313035397.pdf
    • http://feloxokarapuj.rf.gd/kolewepopurulawoxes.pdf
    • https://s3.amazonaws.com/dubiditiginowo/faluluxebese.pdf
    • https://s3.amazonaws.com/vaxebisapesi/balancing_chemical_equations_questions.pdf
    • http://femumakowaw.epizy.com/14426553715.pdf
    • http://lojetewope.epizy.com/zezaduruliwevo.pdf
    • http://wefasinufatotag.epizy.com/ps4_emulator_online_android.pdf
    • https://uploads.strikinglycdn.com/files/15243f23-32a3-489e-abe0-41d982843e91/honda_shadow_1100_exhaust_stud.pdf
    • http://kemixirutuj.epizy.com/55213047027.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_off00015c5f.bin
2b5923ecf9fcf613a9cbcbfa5078c6882971a6d7d68972055b5c26464300f8a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C5F 4676 bytes
font_01_sfnt_off00016c53.bin
f8f0a2fb4f46a48ec644205b6d75e8b18d8fbe83ce17aa15df405cc2413bcade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C53 14008 bytes
font_02_sfnt_off000199b1.bin
869180ecc9a2790f1ed052a308c9a31de54e74f2f68a3c90df826b6a00e80a44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x199B1 16184 bytes

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