Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10c77a3037cce45…

MALICIOUS

PDF

42.2 KB Created: 2021-06-14 01:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0fd98cbca9223801ba9198e801db2d3e SHA-1: 2b437ec4e42c0eb53172405e869c75604d65df8b SHA-256: c10c77a3037cce45a2426642251ae20b375085021a8836278b1badf944dc8bf2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with one specifically identified as a malicious redirector leading to a 'game hack' lure. The document body and extracted URLs suggest a social engineering attempt to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/casper-hack-roblox-game-hack In PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/easy-robux-com_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-boy-shirts-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/easy-free-robux-game_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/como-hackear-la-cuenta-de-tu-amigo-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-games-on-roblox-2021_GM431946152.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_off00004ad3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD3 24124 bytes
SHA-256: 95f9f2e25e2e766f17fde05b1c4b07b28124750256054a32d8d2d13b253c1355
font_01_sfnt_off0000821a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821A 18356 bytes
SHA-256: 40f6c95ef1e44d1700279d6ba30db78bd9c1c84ce54992a375e85f9009b4208b

Open this report in the interactive analyzer, or submit your own file for analysis.