Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95eaed920f463d3…

MALICIOUS

PDF

79.9 KB Created: 2021-03-29 07:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4122d619c67e675f78ee106b0151a0f3 SHA-1: ced808ccb0e79af1f26b41ea95036b676d23a695 SHA-256: d95eaed920f463d3b00c7da66a9aa4ef51872a5938b1c84010d65809cbcc8dab
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 'strength training program for athletes pdf'.

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://vilenefex.ru/award?keyword=strength+training+program+for+athletes+pdf
    • http://cmb-societe.com/pannes_diagnostics_auto90htp.pdf
    • http://hotita.space/pawimumigiwolufapcv2q.pdf
    • http://pedrons.space/7379795661653vin.pdf
    • http://wellwork.site/framelapse_pro_apk_downloadh7a9q.pdf
    • http://milanomoda.site/fl_studio_12_download_for_windows_7uutwa.pdf
    • http://gedatidigog.sportsontheweb.net/fmea_handbook.pdf
    • http://fruct.space/does_3_day_potty_training_workksqh2.pdf
    • https://cdn-cms.f-static.net/uploads/4394072/normal_603e1c89ae19c.pdf
    • https://static.s123-cdn-static.com/uploads/4403937/normal_5ff40e5c10399.pdf
    • https://cdn-cms.f-static.net/uploads/4402948/normal_605236dd1feba.pdf
    • http://idealicaitaly.site/how_many_sweet_potatoes_make_1_lbf47m6.pdf
    • http://monongzhlh.space/majutobekaxazupize49xv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bc03f5fb-b204-441b-a838-30325c504906/how_to_read_data_from_another_excel_file_in_vba.pdf
    • https://uploads.strikinglycdn.com/files/619657aa-0a53-4225-9df2-29b89f240e58/how_to_cut_monster_illuminessence_led_strip.pdf
    • http://zobuwijezad.onlinewebshop.net/jigujevobetupatuxevegud.pdf
    • https://uploads.strikinglycdn.com/files/d47edcaa-8473-4435-b3bc-7470f0023fe6/disney_cars_coloring_pages_to_print.pdf
    • https://s3.amazonaws.com/tubupejevomo/edgar_allan_poe_cuentos_policiales.pdf
    • https://uploads.strikinglycdn.com/files/ff2c4f87-c997-4288-8ed1-b52314c4481a/how_do_i_read_the_bible_in_chronological_order.pdf
    • https://s3.amazonaws.com/lupuvogotog/don_bradman_cricket_17_android_game_apk.pdf
    • https://s3.amazonaws.com/suxuzubojut/67770446738.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_off0000f95e.bin
8ee6aad1953681370b4b519ec1c345eb0d2f82647c8cca9a54c379407724a72f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF95E 5560 bytes
font_01_sfnt_off00010c1a.bin
cdce1f1f7b3ed455e316467fe0286f727c6bcecd15f93b346406f08e3b0a2eff
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C1A 11204 bytes