Malicious PDF — malware analysis report

Static analysis result for SHA-256 498667e031e706cf…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 11:09:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7fe545999062c2326059a9f5e44446a6 SHA-1: b43457d094f0a74b3ee7a2952420b401463b5ccb SHA-256: 498667e031e706cf4c67ba7cd3100f776116c258eb5fc5ee6b22217315bec151
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free generators. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The presence of these links strongly suggests an attempt to redirect the user to malicious sites, likely for further exploitation or credential harvesting.

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-root-hack-game-hack In PDF document text
    • http://karldall.dk/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://karldall.dk/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/how-to-make-a-minecraft-client_GM479516143.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_off000048b7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B7 26228 bytes
SHA-256: cc127ff2fff68c456f1b42dbb747e91edb087f9271b420e837754d641ca008e6
font_01_sfnt_off000084c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84C8 17716 bytes
SHA-256: 3314f7b38d470594eaa73d4973565fc6f74845bbaa83b1a4a8a9c9b025514e4b

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