Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2d48146281e9ffc…

MALICIOUS

PDF

80.1 KB Created: 2021-04-07 18:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b170370613cc26c340b428ad0c3948b2 SHA-1: b5ce1b704e172378ffe8b45b6ab79f65cc5c2f3e SHA-256: a2d48146281e9ffc4919f8c7eff3924015d8e630122e13366794b2fbaa0881a3
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 URL that appears to be a search result lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/wix?keyword=demons+in+eden+pdf
    • http://copytoshka.ru/black_and_decker_14.4_volt_cordless_drills6xdw.pdf
    • http://twenty-promo2020.ru/bosch_gts_10_xc_specsce0sl.pdf
    • https://zitozujenuzudip.weebly.com/uploads/1/3/4/0/134042901/pujatowugebi-dinokide.pdf
    • http://poverkavoda.website/5449843826b41q3.pdf
    • http://befigter.xyz/the_game_changers_firefighters_diet5ug9j.pdf
    • https://sarutofujatazix.weebly.com/uploads/1/3/4/5/134584212/fapibagugof.pdf
    • https://cdn.sqhk.co/kimorotadopo/7Jggrgh/best_free_offline_ps4_games_2020.pdf
    • https://cdn.sqhk.co/mixenezir/ij3ihHi/download_real_football_soccer_games.pdf
    • https://cdn.sqhk.co/xurajalijok/haIuz8v/wordpress_download_all_media.pdf
    • https://fusikejasuk.weebly.com/uploads/1/3/0/8/130874124/e9a085005afd9.pdf
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdf
    • http://beststudent.space/wugaduja67b3o.pdf
    • http://salet.store/39325357851p64bj.pdf
    • https://rixagaxovexi.weebly.com/uploads/1/3/4/0/134000332/lubezavovaroveke.pdf
    • https://tapizijivuvol.weebly.com/uploads/1/3/2/6/132696465/dafapedutowaxu_xetajojuw.pdf
    • https://cdn.sqhk.co/litalile/nF7dLgg/spine_tattoos_pain.pdf
    • http://hookup673.site/what_port_443_used_forgrwh0.pdf
    • https://jejaxeka.weebly.com/uploads/1/3/0/7/130739175/c5b71e408c.pdf
    • https://jevamupoledi.weebly.com/uploads/1/3/4/7/134712268/pejigelabopa.pdf
    • http://jilet1.club/persepolis_book_overviewoij8r.pdf
    • https://cdn.sqhk.co/kupawusel/jgejiDu/kojutumagamile.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tibitexil/how_long_does_the_vivitar_drone_battery_last.pdf
    • https://s3.amazonaws.com/tuxalowafokuvo/best_guide_books_for_japan.pdf
    • https://s3.amazonaws.com/kuxuxemu/79931799525.pdf
    • https://s3.amazonaws.com/nedijowewoded/58629782207.pdf
    • https://s3.amazonaws.com/mijumomub/68288815276.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_off0000ef97.bin
b81a4ed2e84b9be92ef3799767e67111daf9ed7f63d13ecaaaa2ae31b17f3e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF97 4556 bytes
font_01_sfnt_off0000fef6.bin
41b85d8585946bccdaabeeadb9a5401fdf855a772733e3d14cecdd6f03bc7efd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF6 11408 bytes
font_02_sfnt_off000124d1.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124D1 4324 bytes

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