Malicious PDF — malware analysis report

Static analysis result for SHA-256 72c7c778285b0203…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 01:33:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa64f63ae0d350c932c6571d447ec02b SHA-1: cf73ac67e9364291342f77cac9014d115f6a2df9 SHA-256: 72c7c778285b0203ef5cc51705f0b9fea7484280cbf960764d98e1cd3f004064
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to websites that claim to offer game hacks and free in-game currency, such as Coin Master spins and Robux. These links are identified as malicious redirectors. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-daily-free-spin-app-game-hack In PDF document text
    • http://pdia.de/images/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://pdia.de/images/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/robux-survey_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://pdia.de/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://pdia.de/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://pdia.de/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://pdia.de/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004847.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4847 24768 bytes
SHA-256: f9ca238684a686592e088bf2dbf3c5756cd307e8ac39f9eb1fb08b7a51ae4874
font_01_sfnt_off0000812c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812C 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADD 18308 bytes
SHA-256: f9a3a46f76b0cae8a4d9bd0baf07f2a5aefd3f4554b846be65e0119e8f17791d