Malicious PDF — malware analysis report

Static analysis result for SHA-256 a766e09ddd64a29f…

MALICIOUS

PDF

76.2 KB Created: 2021-03-30 01:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 523fa3cd6b69f689c2820d4e6f1f9d10 SHA-1: d033d95e10abd0ea7533282d8ee52605d94a2e66 SHA-256: a766e09ddd64a29fc824af1dc3c08d406a9cfd26da0da2bc75d2d052354b2457
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 numerous embedded URLs, many of which are obfuscated or lead to PDF files, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains references to movie titles and the wkhtmltopdf tool, indicating a potential lure to download malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/123?utm_term=adanga+maru+movie++tamil+crow
    • http://believes.space/3958634525c19vp.pdf
    • https://cdn.sqhk.co/sixepatexup/BhfgeZL/gosuguvizukisuwenag.pdf
    • http://lnstagramverifiedsbadgeforms.com/kevobesujedoxewokiaz98.pdf
    • http://mebel-albero.ru/673014397729cp5r.pdf
    • http://bisewilorilamej.sportsontheweb.net/jekejozitu.pdf
    • http://monongzhlh.space/39934756136kcy69.pdf
    • http://gnfcns.info/how_to_do_chest_exercise_with_resistance_bandscwm0y.pdf
    • http://tuwasukam.getenjoyment.net/vintage_polaroid_sun_600_lms_film.pdf
    • http://rezotu.xyz/wiramexevewexvhcaj.pdf
    • http://fruit-ita.fun/cfa_level_1_formula_sheet_2019arjeg.pdf
    • http://valigulepi.scienceontheweb.net/almas_gemelas_libro_deepak_chopra.pdf
    • http://idealslimitaly.site/how_much_does_slot_machine_costignmm.pdf
    • https://cdn.sqhk.co/gurudulep/hhRpOji/blum_drawer_runners_soft_close.pdf
    • http://fredo.run/disdain_crossword_puzzle_answero3xbo.pdf
    • http://moxilekulina.getenjoyment.net/2007894850.pdf
    • http://daating19.site/data_warehousing_and_data_mining_tutorial_pointbhm4e.pdf
    • http://datab.vip/perrines_literature_tenth_edition_answers5hqbm.pdf
    • http://bluebadgeapproval.com/carrier_air_conditioner_remote_control_apk0wiog.pdf
    • http://pixunune.sportsontheweb.net/81241714865.pdf
    • https://cdn.sqhk.co/tesikotuk/hNttMje/zivupus.pdf
    • http://huseyincanx.com/cesur_ve_gzel_english_subtitles_epiy5rbf.pdf
    • https://cdn.sqhk.co/tavedikovo/yThj97N/18133977737.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fidalanono.myartsonline.com/garfield_his_nine_lives_movie.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_off0000ee10.bin
60f6ace7e6dbc62ea53677697e4e0e0207820745f0983708aac66808e8cd2860
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE10 5220 bytes
font_01_sfnt_off0000ffd0.bin
9c9099bfbc4a9df2b431cbe225e859c5d1ba18e7cb0e6396a709fabdb70a988d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD0 10448 bytes