Malicious PDF — malware analysis report

Static analysis result for SHA-256 5656f4b7290a6733…

MALICIOUS

PDF

73.6 KB Created: 2021-01-23 00:39:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 206c1e16bfd0b137dbeb4d6e14635fb0 SHA-1: 874bfd28b26df1e4f84dd799bf676dc944c08bef SHA-256: 5656f4b7290a673333ca8db7f7bea83907f01706a3f882c7a5a20dc3a0550054
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 for 'Pdf.Phishing.Trojan-d2568dad23a94d95'. The embedded URL 'https://trafficel.ru/123?utm_term=card+wars+mod+apk+1.11.0' suggests a phishing attempt to trick users into downloading a fake application. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence indicate malicious intent.

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://trafficel.ru/123?utm_term=card+wars+mod+apk+1.11.0
    • https://site-1253239.mozfiles.com/files/1253239/59119218627.pdf
    • https://cdn.sqhk.co/birenejar/VmquMyw/tajejevevonugifajitideme.pdf
    • https://cdn.sqhk.co/kosenopelid/hjzichg/39732503476.pdf
    • https://site-1174368.mozfiles.com/files/1174368/starcraft_heat_press_swing_away.pdf
    • https://cdn.sqhk.co/milagaleja/Kbgj7yq/banana_pudding_dump_cake_recipe.pdf
    • https://site-1178554.mozfiles.com/files/1178554/lukuluzer.pdf
    • https://cdn.sqhk.co/gulifunanale/jbxjhcZ/starz_power_book_2_time.pdf
    • https://site-1176487.mozfiles.com/files/1176487/94650882758.pdf
    • https://site-1227540.mozfiles.com/files/1227540/49346729090.pdf
    • https://site-1178466.mozfiles.com/files/1178466/lunenerijiwunamav.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tufitijinexu/formule_alchimista_golarion.pdf
    • https://s3.amazonaws.com/mupukesunobaga/92687225781.pdf
    • http://nuvitaros.epizy.com/gamesir_world_apk_latest_version.pdf
    • https://s3.amazonaws.com/jarawaxanivu/piteduxitajodipezijezutit.pdf
    • https://s3.amazonaws.com/fasomusogapovi/58227669581.pdf
    • http://katezoluvezile.epizy.com/wedding_invitation_card_template_online.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_off0000e2ad.bin
c049129430ebe10ad487fa4de31596ed96f997f4c03df83fb104e149a1565634		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AD 5360 bytes
font_01_sfnt_off0000f4ea.bin
e927cd8ff10c433a0ed1984a31e8b5640946373c707caa31295040f133d13db6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EA 10632 bytes

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