Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dbecf9a2b7985c8…

MALICIOUS

PDF

46.5 KB Created: 2021-05-14 01:06:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 61559638f2a61203804646043057f0be SHA-1: 286e2bf9c67e798eb66f3d05eb89c46022d38758 SHA-256: 6dbecf9a2b7985c82bcc62fe8da161623370e4c5ac5cbb106886a70b1dc91d2e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the presence of multiple malicious redirector links indicates a phishing or scam attempt, likely delivered as an attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-spins-for-coin-master-ios-game-hack In PDF document text
    • http://finettifrs.it/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/get-robux-com_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/robux-free-com_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/easy-ways-to-get-free-robux_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_off00004ac1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC1 28132 bytes
SHA-256: a77af126c0b46215120d3bc280fbdfe2695d9cbef713fa223f5957feae75fa58
font_01_sfnt_off00008b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B16 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000094c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C8 17884 bytes
SHA-256: d6e90866c30832384271063124a5c9cb80fb52483677f44d0692746c0ffe6ea3

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