Malicious PDF — malware analysis report

Static analysis result for SHA-256 9413bee2ee047d86…

MALICIOUS

PDF

43.5 KB Created: 2021-05-17 03:07:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3c93a50ca5412e12917431857d9979a2 SHA-1: 2767cfd7483203a02b1b7fa82c32405a68cc5b9a SHA-256: 9413bee2ee047d86e7819897b001eb327857ad55cf256fde91e28be84d2cced9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link disguised as a "game hack" lure, which is a common social engineering tactic. The presence of multiple embedded URLs and a visual download button further supports the malicious intent. Although no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/406889139/coin-master-free-spin-link-today-50-game-hack In PDF document text
    • http://msfs-eastafrica.com/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-spin-hack-apk_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_off00004c23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C23 25180 bytes
SHA-256: d97f60950448bf73e4181f0d6e4da000de65a769933b36364263b1574706993b
font_01_sfnt_off00008614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8614 18716 bytes
SHA-256: 34d71a1e16074585b92cedabb87dd12f76b262856d377b8410846490f9b2f930

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