Malicious PDF — malware analysis report

Static analysis result for SHA-256 342e988aad1d827b…

MALICIOUS

PDF

65.3 KB Created: 2021-02-22 13:21:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7e991e433ed9ad0e859131f1a08884ab SHA-1: e13d90fbf269d293f83edb4c4bc699c719b9f7aa SHA-256: 342e988aad1d827b773f4dd64cd8b14427601d61734a9370956d2e34e7d9e580
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI, pointing to a suspicious domain. The ML classifier and ClamAV also flagged this file as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to contact information, directing the user to the identified 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://baarspo.ru/wb?keyword=monster%20pizza%20manila%20contact%20number PDF link annotation
    • https://cdn.sqhk.co/jarixizotib/dX3i8xl/galaxy_glow_hd_wallpaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376126/normal_5ff2a93ad0874.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/h0ogchj/subway_surfers_hack_android_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sobutexe/bghgy0h/sezogamunuxukumamobara.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/h5ijigO/wowugozeravoz.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/jcx8igT/league_of_legends_wild_rift_beta_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/merabuvi/OjbOdjj/radiant_floor_heating_diy.pdfIn PDF document text
    • https://cdn.sqhk.co/dogilijesiwu/uhyjgih/fapaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/rufopunuk/h64jjhi/car_shifting_hard_from_park_to_drive.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449184/normal_6000d83bc8046.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/setigafat/51626563482.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/frasier_theme_song_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/gulzaar_chhaniwala_kasoote_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/pazedu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5BF 5272 bytes
SHA-256: 6d8dd7be4ea5f1695c2348d25ef01e61b5d0ee5008488feeb41bbfa5b38bb5bc
font_01_sfnt_off0000d7a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A5 9536 bytes
SHA-256: 329646beaa76022d0c0e399c7fc2d9efde43425eea10a70faadbe9c568f3a21f