Malicious PDF — malware analysis report

Static analysis result for SHA-256 81af60f58aea8519…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 07:29:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 81f7d9f3f3dda575f48d00c927b96068 SHA-1: 8bc1e3f5b0e84827bc97b43617f3c6c39c885633 SHA-256: 81af60f58aea8519bd71859ca3a2280e10be7cc5557366ebd0c28126657a518d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are identified as malicious redirectors, specifically luring users with promises of game hacks and free currency. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely to lead users to download further malware or compromise their accounts. No scripts were extracted, but the presence of malicious redirectors and the lure content are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-get-free-robux-steps-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-para-tener-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/execute-scripts-notmallyso-sorunu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/han-hackeado-mi-cuenta-de-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/speed-hacks-on-fangs-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-jailbreak-fly-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/enderrobux-117-hack-para-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-100-working-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/do-you-want-free-robux-song_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-roblox-generator-no-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000302d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302D 22332 bytes
SHA-256: 59e31da6fdb1f5a41cb48a09df83de586e26cdfe8aeabfccf17a4dee652af548
font_01_sfnt_off000061ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CA 19160 bytes
SHA-256: 8e4bf5e35d1a0f9fcf49341792e5baf52f00ab143530ed8d9c05d0f02d10e666

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