Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd8212491c41d74…

MALICIOUS

PDF

76.9 KB Created: 2021-03-20 22:40:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f4b95fce4f9b32496912825947a0ac9 SHA-1: ac4eaab0c843d803e8b9d6e20728339cbaa284d0 SHA-256: 0fd8212491c41d74810d7193c4b33e02ea937b43d439b3e9e5671f165033df90
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by both heuristics and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'ethnographic methodology', which is likely a pretext for a phishing or malware delivery attempt. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/award?keyword=ethnographic+methodology+pdf
    • https://cdn.sqhk.co/pinofizulag/k2Nfgem/rise_of_kingdoms_minamoto_talent_guide.pdf
    • http://saporik.scienceontheweb.net/active_and_passive_voice_rules_in_urdu.pdf
    • https://cdn.sqhk.co/petebeki/QGmwQjg/28281848795.pdf
    • https://cdn.sqhk.co/pigexebobe/hcheDhf/nexaduvedagobogi.pdf
    • http://copyrighthelpptteam.com/41173478495c8pfb.pdf
    • https://cdn.sqhk.co/xexerekija/hhbjclD/seroxofinazapeser.pdf
    • http://whitetwo.space/the_covenant_fallout_4_test_answerspuo37.pdf
    • http://love-cosmetics.shop/extraction_of_actinideszle12.pdf
    • http://raxosiwu.22web.org/75381165571.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a8ecf7f3-a3d3-4593-9285-390eefa9f079/tcp_ip_network_layer_protocols.pdf
    • https://uploads.strikinglycdn.com/files/c0cfdd6e-a834-4a2f-9555-0d53b22bddc5/best_way_to_learn_medical_billing_and_coding.pdf
    • https://9e705916-5bde-4eb8-be9b-8b3e910fbaf8.filesusr.com/ugd/c7a620_436049a535d44c44848bca70968b6814.pdf?index=true
    • https://828c6a01-da61-4814-986a-f72e64f4f334.filesusr.com/ugd/cdfdba_c835da9529d841789d03c8fd191b1cd4.pdf?index=true
    • http://tiwufuwivuvuf.epizy.com/the_vampire_diaries_season_8_episode_16_trailer.pdf
    • http://biviroromu.rf.gd/how_to_become_a_successful_operations_manager.pdf
    • http://zutaturusix.myartsonline.com/nogewufawusekolujojuz.pdf
    • http://magixek.rf.gd/37244860464.pdf
    • http://nejimafalun.onlinewebshop.net/caste_category_list_in_karnataka_2020.pdf
    • https://3a0d5408-2ea1-4258-8d29-5d96341cad2c.filesusr.com/ugd/79cb75_a9889860107c4eacb88efe5ef8ef3e58.pdf?index=true
    • https://a22c3535-4c29-4f26-bf6b-1e631d3648e5.filesusr.com/ugd/28986c_48ab75738e184a6689d55ad447e9c017.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8ba7953b-a0c8-4d50-abed-0d92e6e6b15b/bemabata.pdf
    • https://uploads.strikinglycdn.com/files/cb0b3608-f093-4a59-967c-05da999164ed/how_to_program_garage_door_opener_in_car_without_remote_liftmaster.pdf
    • https://1628ddcf-e301-416d-9649-d9339b85441b.filesusr.com/ugd/0b1079_2bdce674d164460cb7e426f802b2998e.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed68.bin
df6ee36ddaff06b53ff702598e6f1b76224c8acdf778a71073dbad14d92180ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED68 5448 bytes
font_01_sfnt_off0000ffdf.bin
0031896e5f959d3abbe3f67caad100ad9ffb4ca71e9f190b9af6fbe5e8a6b80c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDF 10872 bytes

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