Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff265302670daa84…

MALICIOUS

PDF

44.1 KB Created: 2021-05-13 14:32:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76dc54e487c0e0579e9c2a3904704cfa SHA-1: bb1f08d9f95ba7e2764a8fe29cea24a1af2a792f SHA-256: ff265302670daa841d4e5e078e97ae73aa5f288769cad1081f9d0ee8055c455f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting game hacks and free generators. The document body, though partially corrupted, contains similar lures and URLs. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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-hack-spins-android-game-hack In PDF document text
    • http://firesafetyservices.biz/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-lucky-patcher-hack_GM406889139.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_off00004911.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4911 25312 bytes
SHA-256: 4aaec7eeec6b5fba9890461e36af3df99907d6228a027f6c8fb3d752a516d407
font_01_sfnt_off00008096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8096 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A48 18068 bytes
SHA-256: 19b8e36e6032ad76840d77aaed14847fefc8df0cce38f80c2a4b9556f81b8b13

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