Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6702774ce4c1a4f…

MALICIOUS

PDF

76.3 KB Created: 2021-03-29 13:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9815383c05149e9eaa07c3710898452f SHA-1: 544304de69d3747debc91ffcaa22a637db6a67c2 SHA-256: f6702774ce4c1a4f67c24eb786467b1399205cc8104574c7606138ad5015be49
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and ClamAV detection confirms its malicious nature. The document body, though heavily obfuscated, suggests a lure related to 'Biharmasti in bhojpuri movie', indicating a phishing or social engineering attempt to drive users to the malicious URL. No scripts were extracted, but the presence of external URIs and the ML classifier's high confidence suggest a downloader or phishing campaign.

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://pelibifir.ru/123?utm_term=biharmasti.+in+bhojpuri+movie
    • http://vusejulene.iblogger.org/skullcandy_shrapnel_wont_charge.pdf
    • http://wuroguredogir.getenjoyment.net/34944340338.pdf
    • http://masozaxo.22web.org/free_online_time_card_template.pdf
    • http://rubolanir.mypressonline.com/keirsey_temperament_sorter_questions.pdf
    • https://lasuzolus.weebly.com/uploads/1/3/5/3/135315371/lexibufigapek_migovezuza_nawawukuzub.pdf
    • https://mimewizade.weebly.com/uploads/1/3/4/6/134678746/4329002.pdf
    • http://woxuruko.medianewsonline.com/what_poetic_devices_are_used_in_mother_to_son.pdf
    • http://mandarins.space/sigefj257x.pdf
    • http://iciapp.xyz/wizard_and_warriors_3_nes_rom3xl59.pdf
    • http://wisopenudaris.22web.org/cahier_de_vacances_francais_5eme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://uploads.strikinglycdn.com/files/80df0e93-19b2-49f1-9235-237fde83bcf0/61270101608.pdf
    • http://texagofudadeket.epizy.com/97213788390.pdf
    • http://jatuvujuf.epizy.com/tujin.pdf
    • https://uploads.strikinglycdn.com/files/e72a683e-20fc-4086-ac5a-e1fe0dfe2ea2/28261604091.pdf
    • http://kifesafijupesob.onlinewebshop.net/womavixezuwut.pdf
    • https://uploads.strikinglycdn.com/files/1c5e330c-93e4-4b0f-9327-b686d42a72aa/ggplot2_cheat_sheet_2019.pdf
    • https://uploads.strikinglycdn.com/files/964d7d9d-fd8f-4862-892a-7f2871cf6a3f/black_and_decker_cordless_jigsaw_with_battery.pdf
    • http://wojibikifi.myartsonline.com/distress_tolerance_checklist.pdf
    • https://uploads.strikinglycdn.com/files/04795576-8f93-4a6e-bd10-9e1cd272f93c/how_to_get_a_free_dyson_hair_dryer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d96c.bin
2e6c07bd124d798abfaea07285239cf10e5b6b36d38106a8f33e8107de1c7940		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD96C 5384 bytes
font_01_sfnt_off0000eb9b.bin
65e5e59a5b3a000df355b23db03d6172af2f77f5fd302d3194baee3346444887		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9B 9988 bytes
font_02_sfnt_off00010e33.bin
dfa013f6a0377150ab99cf51319b84fafe7852314483e0ea43693f6209d90026		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E33 5536 bytes

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