Malicious PDF — malware analysis report

Static analysis result for SHA-256 4049f7bfd99d5c2f…

MALICIOUS

PDF

44.1 KB Created: 2021-05-14 15:02:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 66084e08788dd10f9fcfe6c769979b4c SHA-1: 3e3c2962ac9b8c22ffd2bd0dc2f87c239db4b33f SHA-256: 4049f7bfd99d5c2faf252a59d340efefc5535825b399e94a5bb6df3eed83c4a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that lead to known malicious redirectors and sites offering 'game hacks' or 'free generators'. The document body and heuristics indicate a lure for free spins or hacks, which is a common social engineering tactic to drive users to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-spin-link-today-2021-game-hack In PDF document text
    • http://ivpr.net/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/app-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-apk-hack-32_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://ivpr.net/images/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://ivpr.net/images/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://ivpr.net/images/roblox-hack-2021_GM431946152.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_off0000463b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x463B 24460 bytes
SHA-256: 7962d3d2ef35ad688ac9984fe5f7f380ece8f7d5e288d557e8be27834420fe5e
font_01_sfnt_off00007e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E40 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000087f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F1 18812 bytes
SHA-256: 209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f

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