Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4fa7d98d41a9a48…

MALICIOUS

PDF

44.3 KB Created: 2021-05-19 12:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c79962bc2430d8ccfb3f95d5bae1e144 SHA-1: e6fe015cdbcf91898316fbe17729ad6987523372 SHA-256: f4fa7d98d41a9a48e8ec0a8cffcb4a4f328c3ed0f289cc91da2239212b05bab4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising game hacks and free items, which is a common lure for phishing or malware distribution. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The presence of these links and the ML classifier's strong indication of maliciousness support a high confidence assessment.

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 https://netcdn.xyz/app/1330123889/pubg-2021-uc-game-hack In PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/mcpe-download_GM479516143.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.pendaftarantransvision.com/ckfinder/userfiles/files/coin-master-daily-gift-free-spins-and-coins_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_off000048b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B8 30772 bytes
SHA-256: c2dc6e201257109ca6484ad7676517d660189d285bbadd3765bd4d56296deb76
font_01_sfnt_off00008af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF7 18300 bytes
SHA-256: cc6c1daefb37a3478920700697ad95155b029b6429e31b058b63634936d5f51e

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