Malicious PDF — malware analysis report

Static analysis result for SHA-256 998863ed222727cd…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 07:52:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 926a998e9331af7ac17e8910c12fca27 SHA-1: 25cfbfd2aa6671ccd3f3c771a2988ded3ada687c SHA-256: 998863ed222727cd73060d8d3e9caac0188197e058af3f51e74e13cb40d200c3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a website promising a 'Coin Master Free Spins 2021 Generator', which is a common lure for scams or phishing. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to potentially harmful content.

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-2021-generator-game-hack In PDF document text
    • https://itv-grabungen.de/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-game-free_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/minecraft-pocket-edition-free-download_GM479516143.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
stream_003_off000048cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48CB 24940 bytes
SHA-256: a9fa4318a82f6cd689cef44408ce25c8580609e68bdd2d3851af75fd58c2bd01
font_01_sfnt_off00008172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8172 18288 bytes
SHA-256: 6314f2259b06a943d64bd11b5da4e77269207e3939d52c12000c78136d7b4f6c

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