Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4113c621a32b79…

MALICIOUS

PDF

41.5 KB Created: 2021-05-13 08:12:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f2935d2cf0368f5dd3f344cb49623a2 SHA-1: e033d6bbf02e99790205ed501f07cec5be51d719 SHA-256: 1c4113c621a32b7980c2ebba6b8c8b2fdc9437653ecfd887d23b4333870a40ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as game hack generators. The primary lure is for 'Coin Master' free spins and coins, a common social engineering tactic. The document body and embedded links suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-and-coins-for-iphone-game-hack In PDF document text
    • http://samfora.de/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://samfora.de/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://samfora.de/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/static-moonactive-net-free-spins_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/robux-miner_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://samfora.de/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://samfora.de/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://samfora.de/images/coin-master-free-spin-link-today-download_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_off000047d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D2 24540 bytes
SHA-256: cc66d13859f4de9f9f5b4393e84ab62a2af5c3db6fc5bc5719c1f3eb8391a2d6
font_01_sfnt_off00008033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8033 18224 bytes
SHA-256: b4646ab3e358ecd7896173e374a4f37f60f7674218af6eb698aacc488fc1d121

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