Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e6ec1ae63c281c…

MALICIOUS

PDF

77.9 KB Created: 2021-03-17 16:13:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5daa4babe38a110e730dbf4f3d8c3e9 SHA-1: 22e47156045c7f47c397b73bbf7a707d92429005 SHA-256: 96e6ec1ae63c281c342349aff9d5525c99ebc0ea87a2455b35208a67bb098919
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to 'https://zajinet.ru/wix?keyword=mujeres+politicas+sexis'. The document body, though heavily obfuscated, contains elements that suggest a lure. ClamAV also detected this as 'Pdf.Phishing.Trojan'. The presence of an external URI and the phishing detection strongly indicate a malicious intent to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://zajinet.ru/wix?keyword=mujeres+politicas+sexis
    • https://cdn-cms.f-static.net/uploads/4417208/normal_602f14733263c.pdf
    • https://cdn.sqhk.co/bokupajokim/jiaDGhd/best_sound_effects_library_music.pdf
    • http://copytoshka.ru/ck100_key_programmer_manualf20bw.pdf
    • https://cdn-cms.f-static.net/uploads/4414501/normal_5fe9cd8f076c4.pdf
    • http://artdebug.site/are_lg_heat_pumps_reliable34kxj.pdf
    • https://cdn-cms.f-static.net/uploads/4457862/normal_5fda85218e1f9.pdf
    • https://cdn.sqhk.co/kelopifagisu/ghihgjz/spin_bubble_shooter_online_game_play.pdf
    • https://cdn.sqhk.co/voravaxa/ghzjglB/paintball_shooting_near_me_prices.pdf
    • https://static.s123-cdn-static.com/uploads/4502236/normal_600836e0185b3.pdf
    • https://static.s123-cdn-static.com/uploads/4465924/normal_5fcd9972ae95e.pdf
    • https://cdn-cms.f-static.net/uploads/4459318/normal_6041c5dd422c1.pdf
    • https://cdn.sqhk.co/leluforeref/gdsDhdJ/85842638854.pdf
    • https://cdn-cms.f-static.net/uploads/4463812/normal_6041af4442e34.pdf
    • https://cdn.sqhk.co/xupodafib/hi5b6hj/67504473249.pdf
    • http://kukushpa.fun/26782105680zdofe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a24ed680-7dbc-4fe6-9862-fee7813ad2b5/68443557249.pdf
    • https://uploads.strikinglycdn.com/files/e365235c-7e94-427a-8779-c859d5661402/julabozefunuga.pdf
    • https://uploads.strikinglycdn.com/files/299626f5-3624-442c-99fc-a1da224e7bcd/self_performance_review_examples_leadership.pdf
    • https://uploads.strikinglycdn.com/files/e778da34-64f2-4dc9-ad80-e6a319064c5f/rosilufewijeri.pdf
    • https://uploads.strikinglycdn.com/files/59ec2647-8846-4bc4-beda-c590149d4bdd/what_is_statistical_estimation_of_scale_economies.pdf
    • https://uploads.strikinglycdn.com/files/c13ab4d6-5afe-46d2-8dfa-1fd1e3839969/74549734721.pdf
    • https://uploads.strikinglycdn.com/files/4cc471f3-8f95-4d2d-b5a8-a40c5a3b8da2/does_dish_voice_remote_work_with_wireless_joey.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_off0000eb5c.bin
b0ac6f547c8aee2361c5f4f8ed37e30f37c574abbae48760149e79338d822c7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5C 5076 bytes
font_01_sfnt_off0000fcc4.bin
436d81595f17472bed5cc9aed717b98b0a51561d48f53b592d67c285ef5c5237		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC4 14896 bytes

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