Malicious PDF — malware analysis report

Static analysis result for SHA-256 6321a0a3b6862b6d…

MALICIOUS

PDF

76.8 KB Created: 2021-03-26 03:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e248262a2dc923e64f63a00aecffe5a SHA-1: e4b1395dc827acc7ec9497995251859cde5329e3 SHA-256: 6321a0a3b6862b6df9f96229bf00c3c2ff8305c43b01a6df2414b66efd7341fa
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 used to deliver a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a business plan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://lozipotod.ru/award?keyword=construction+hardware+business+plan+pdf
    • http://nukowivoxom.iblogger.org/banglarbhumi_dag_and_khatian_plot_information.pdf
    • http://triple-doska6.club/minecraft_damage_soundlpn61.pdf
    • http://future-techno.ru/288564692956xdu4.pdf
    • http://esportzmlevent.com/mezijijewite0kwq.pdf
    • http://mx50off.info/rules_of_uno_game_in_hindin0mt3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jojineboge.rf.gd/how_to_get_a_replacement_samsung_tv_remote.pdf
    • https://s3.amazonaws.com/ginutu/sigasixulewuxivu.pdf
    • http://rozibililev.epizy.com/carrier_cooling_tower_catalogue.pdf
    • http://ziperajotuvap.rf.gd/giza_dream_sheets_ebay.pdf
    • https://uploads.strikinglycdn.com/files/392810af-66ed-4139-9c58-278fd80ecf0e/66611600641.pdf
    • https://uploads.strikinglycdn.com/files/0d2d0b33-0ece-4bb7-a257-90b96e926ce5/jocko_willink_extreme_ownership_overview.pdf
    • http://pasapizenelefu.epizy.com/81732235549.pdf
    • https://uploads.strikinglycdn.com/files/7eb9fd64-b366-44ff-96e5-9e16765be8d6/char_griller_smoker_settings.pdf
    • http://xakafof.rf.gd/tissot_t-touch_solar_e84_user_manual.pdf
    • https://uploads.strikinglycdn.com/files/fde64cf8-0821-4ea5-8fd6-e3ce0be335c5/wilozajojafen.pdf
    • https://s3.amazonaws.com/xoferuzu/zelevivufasuferidutowi.pdf
    • http://timarerovasezot.epizy.com/shell_scripting_tutorial_point.pdf
    • https://s3.amazonaws.com/bupesejirijejus/60829612314.pdf
    • http://monulaw.epizy.com/remember_me_piano_sheet_music.pdf
    • https://uploads.strikinglycdn.com/files/8d4bf9df-a388-4935-91eb-18536430a912/introduction_to_machine_learning_with_python_guido.pdf
    • https://uploads.strikinglycdn.com/files/0cf08dd1-9359-49d8-a4d2-85b598f52fca/43695608168.pdf
    • https://s3.amazonaws.com/nedijowewoded/capital_fm_songs.pdf
    • https://uploads.strikinglycdn.com/files/7ad17deb-d2e7-4ea3-8499-8cb6938e98df/ravabipipi.pdf
    • https://uploads.strikinglycdn.com/files/48351ef8-396b-4576-95c0-1e7b0879eaf7/mcdonalds_elearning_not_working.pdf
    • http://tibobabinenan.epizy.com/zaxapezogugepefanixew.pdf
    • https://uploads.strikinglycdn.com/files/2590d082-eb2e-484b-aabc-11da2c138d98/45108932613.pdf
    • https://uploads.strikinglycdn.com/files/f1738657-4fd0-482c-a4fd-c2a1f1854c0c/96693117040.pdf
    • http://datufubizut.rf.gd/xopisotunokemi.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_off0000ede6.bin
0b4bde7f30a69f1bd350704394dade0eff588017025324308cfc681c07575ddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE6 5380 bytes
font_01_sfnt_off00010036.bin
0bc2eb8b832a8bbcbe5e008d423d38d8b39c8386ae7f827aac1c931c547c5522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10036 10824 bytes

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