Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e61f750d0fe26a…

MALICIOUS

PDF

74.0 KB Created: 2021-03-17 23:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb1d4bb3b1b6920e8fe0f7c8644d7189 SHA-1: 28b1318abc08f61abea19be55def91a3e273216d SHA-256: 00e61f750d0fe26a97e6ea9e90224e06e1b22ac673edc191b933c0caf27cee20
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain 'jacksth.ru'. The document body, though heavily obfuscated, contains text related to 'country dance songs' and the authoring application 'wkhtmltopdf', suggesting a lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature, likely involving a phishing attempt to redirect users to the malicious URL.

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://jacksth.ru/strik?utm_term=country+dance+songs+2019+2+step
    • http://midoponivejumod.22web.org/risk_factors_of_glioblastoma_multiforme.pdf
    • https://cdn-cms.f-static.net/uploads/4414176/normal_602e58ffb03b0.pdf
    • https://cdn-cms.f-static.net/uploads/4373261/normal_604ed714c1542.pdf
    • http://gunasog.iblogger.org/mathematics_books_download.pdf
    • https://cdn-cms.f-static.net/uploads/4469126/normal_6044674a1691e.pdf
    • http://ejqy.com/hummingbird_depth_finder_manual6v3j1.pdf
    • https://static.s123-cdn-static.com/uploads/4424029/normal_6008e5d163997.pdf
    • http://netewe8.xyz/life_and_death_stephenie_meyer_downloadwm8go.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_1fd894d2457b4c82a21208e8b0a5d314.pdf?index=true
    • https://s3.amazonaws.com/gisujubolidine/41706080961.pdf
    • http://bajivuselome.epizy.com/tisuduberifilanibab.pdf
    • http://fiwabafedazuv.epizy.com/bahubali_2_film_hd_video_song.pdf
    • https://s3.amazonaws.com/fakuguvil/9995768597.pdf
    • http://rovafitazilom.epizy.com/chura_ke_leja_song.pdf
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_1257288465bc49c19999296374c09752.pdf?index=true
    • http://kupaxomuwekag.epizy.com/benugat.pdf
    • https://s3.amazonaws.com/zabejuvijolu/worthy_is_the_lamb_sinach_song.pdf
    • https://s3.amazonaws.com/tobovunoberiki/the_expanse_season_6_air_date.pdf
    • https://s3.amazonaws.com/paxunu/87088746656.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_off0000e3c9.bin
761e7ee2853f992592ae2bc1b5875cbdf95ff8dd01f725535d29acb587cc45da
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C9 5696 bytes
font_01_sfnt_off0000f746.bin
7ab0ed3587cf27db8fb53ee7eaa40980cea6a488eae42ee991208c43950ad2b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF746 10392 bytes