Malicious PDF — malware analysis report

Static analysis result for SHA-256 79bee09413776699…

MALICIOUS

PDF

78.1 KB Created: 2021-04-02 03:36:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6ee565b8720691af2038223dc5aa562 SHA-1: be20592ee2f1cf57ac7d3d5b80c2e60e3d3b7fbb SHA-256: 79bee094137766999373cd8919d3d90a0598adcf0500e9dbd230281b811a855c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to product instructions, aligning with common social engineering tactics.

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/strik?utm_term=bose+sounddock+series+3+instructions
    • http://foxiduwanati.mygamesonline.org/vabezejo.pdf
    • http://lajopufifaji.22web.org/adverbs_worksheet_for_grade_6.pdf
    • http://fb-ig-violation.com/tujuwtgkk9.pdf
    • http://yandex-dostav.ru/uniden_800_mhz_300-channel_base_mobile_scanner_bc355n_manual9ss5o.pdf
    • http://cardio-natural.info/pevupowe8w8km.pdf
    • https://pakipuxis.weebly.com/uploads/1/3/5/3/135347710/pudubokubige.pdf
    • http://molotkov.site/ikigai_book_free_downloadrxy2u.pdf
    • http://figimumagoko.mygamesonline.org/16171005243.pdf
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/270610.pdf
    • http://wupunekum.getenjoyment.net/everyday_life_in_ancient_egypt.pdf
    • http://mopasiwamosul.iblogger.org/semi_formal_dresses_canada_cheap.pdf
    • https://telisawe.weebly.com/uploads/1/3/4/4/134466193/72b8cd550d44d0.pdf
    • https://lugumeduzox.weebly.com/uploads/1/3/0/7/130740149/7052993.pdf
    • http://forijezuxo.22web.org/agendas_imprimibles_2020_gratis.pdf
    • http://phulop.store/kidde_smoke_and_carbon_monoxide_detector_alarm_with_voice_warning4u4pv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vulemeke.rf.gd/arya_telugu_movie_songs.pdf
    • https://uploads.strikinglycdn.com/files/285aabc7-07a6-4d10-941f-79c933682c4f/fluke_pro_3000_manuale_italiano.pdf
    • https://uploads.strikinglycdn.com/files/ed1c30d9-c861-46dd-9b23-2617bd360e4c/will_be_going_to_be_grammar.pdf
    • https://uploads.strikinglycdn.com/files/2eb5c692-6c49-4d2f-b2e3-e1bdf1448514/76606821473.pdf
    • http://vubelifijam.atwebpages.com/how_to_calculate_for_half_life.pdf
    • https://uploads.strikinglycdn.com/files/1e0dabb7-09a4-4da0-a6f4-65cf721fbbe3/what_does_falcon_mean_in_native_american.pdf
    • http://dojiseb.epizy.com/chevrolet_ss_sedan_manual_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/0f14603a-a884-4dac-bf98-776bd0dd6363/ginotafekijetesenosasuga.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_off0000e602.bin
e35b33877b2222b840468bf7704aee6d0a3c138291f4ca10c348b35dbb1f6bed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE602 4848 bytes
font_01_sfnt_off0000f688.bin
16dcdea8981812f40c985a39ef5d07cae59278ef12c9d5c25cf911dfbb947c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF688 10752 bytes
font_02_sfnt_off00011ae7.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE7 4324 bytes

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