Malicious PDF — malware analysis report

Static analysis result for SHA-256 54eddf5b2659d116…

MALICIOUS

PDF

75.2 KB Created: 2021-02-24 19:45:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2c6daa40821a8612a6bd07f3394d5eea SHA-1: a3e85ed372794cb2da005133b64b389580784340 SHA-256: 54eddf5b2659d1163181c3d8222fb9707ec52742f9d8e2af2233cd3bf3b9ad04
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing or malware distribution scheme. The presence of numerous other suspicious URLs further supports this assessment. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users 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://bologen.ru/wix?keyword=order+of+events+wedding+sign PDF link annotation
    • https://cdn.sqhk.co/nibedogoxov/7cPzShh/bekidaselima.pdfIn PDF document text
    • http://epaytds.xyz/5629186355emxvm.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/hfhjFRL/crazy_bowl_free_shipping.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/jdhihbw/jump_force_switch_gamestop.pdfIn PDF document text
    • https://cdn.sqhk.co/guvawatuzax/Dia8qOT/52106964957.pdfIn PDF document text
    • https://cdn.sqhk.co/takodabu/hfhaKMD/sonizunurudafowo.pdfIn PDF document text
    • https://cdn.sqhk.co/rovifatira/g2AUhdb/tasty_101_best_chocolate_chip_cookie_recipe.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/bNhdehd/bass_booster_music_player_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/joraxeneli/YQQjejb/rizanejubudu.pdfIn PDF document text
    • http://skidki-day.site/xedalepuni5za.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_5ffd30112acbc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/1670709588.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/how_to_wind_a_bobbin_on_a_singer_tradition_sewing_machine.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/nofodelikatabago.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/47127951040.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/3145208776.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/97127178506.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAED 4800 bytes
SHA-256: 6aef11374c8c6915d0998c5430c213d3a5bff4732c80631bd91becb94e16f274
font_01_sfnt_off0000eb6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6B 11368 bytes
SHA-256: 99feae39011ee683a427e3e30d3a5ad356ea3c1d8c1d6483e7f7a1eba50df482
font_02_sfnt_off000111b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B0 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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