Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d149ff7b4e14a3…

MALICIOUS

PDF

71.6 KB Created: 2021-01-10 13:03:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f98198cfb3021bc74ee9b65d714c61ce SHA-1: 55c6fc79248372bdaba9569d353f79566d0ec3fe SHA-256: 79d149ff7b4e14a30d279461306768365f7bfe4fb126650836d768362d11dac6
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an external URI pointing to 'trafffi.ru', which is likely part of a phishing or redirection scheme. The document body, though heavily obfuscated, suggests a lure related to 'exploration place wichita ks prices'. No scripts were extracted, but the presence of multiple suspicious URLs indicates an attempt to redirect the user to malicious content.

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://trafffi.ru/wb?keyword=exploration%20place%20wichita%20ks%20prices PDF link annotation
    • https://wegakerovosa.weebly.com/uploads/1/3/0/8/130873826/8204477.pdfIn PDF document text
    • https://xosavufubat.weebly.com/uploads/1/3/4/3/134346154/mesuk.pdfIn PDF document text
    • https://cdn.sqhk.co/sirazisiluz/gibia4I/polar_roller_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/vobipibomuk/iRUhahc/johnny_nash_reggae_singer.pdfIn PDF document text
    • https://luvatuxi.weebly.com/uploads/1/3/4/3/134321506/nituzijoxefozamuzo.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/98af097aa.pdfIn PDF document text
    • https://rinumobepora.weebly.com/uploads/1/3/4/3/134377952/busisabomozu.pdfIn PDF document text
    • https://joketivuwotida.weebly.com/uploads/1/3/1/4/131454049/ba362.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/zhdijjc/how_to_play_solitaire_board_game_youtube.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/ziwuvijevo/animation_creation_software.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/bewakoofiyaan_full_movie_720p_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/85435932681.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/telugu_full_movies_2020_movierulz.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/wilurepujerimujawasopovir.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/whatsapp_status_sad_video_punjabi.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/54176509172.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_off0000dabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABE 5204 bytes
SHA-256: 771f51f700e5030d59c65d909e1e534d44df053ba838649a122e520680bfc6fe
font_01_sfnt_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 10820 bytes
SHA-256: 89f2c0c622ffb6eb5ed98a9a75c12203478b9132b858e8fc725349aaabde9d64

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