Malicious PDF — malware analysis report

Static analysis result for SHA-256 864fe573520de429…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 10:38:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: aa433625d5387519913a6a50d70fc06a SHA-1: cd65cf2057122c154add775c8940b890a8fb2f36 SHA-256: 864fe573520de429a4e856b0eb9c9fcd59aca7bdf73cb9b6d18fd1ece0ca3909
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks and free items, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the embedded URI points to a known malicious domain. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering attack designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.xyz/app/431946152/free-roblox-girl-clothes-game-hack PDF link annotation
    • http://www.comitatoiseo.org/images/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.comitatoiseo.org/images/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c46.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C46 25184 bytes
SHA-256: 8e706fda8cd95b87c75d0c4a8d096627ae31cd4ed41970c7a1276b7673a08b0a
font_01_sfnt_off0000851e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851E 18340 bytes
SHA-256: 92d168e787027ad63a39dc76f4e84211c36f944a19cda74dea389f84a695b5a1

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