Malicious PDF — malware analysis report

Static analysis result for SHA-256 004307f6981ecd2a…

MALICIOUS

PDF

45.8 KB Created: 2021-05-11 03:33:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 143c7ebc12193387ac75a6e1a44403e3 SHA-1: c4114c1ab7751be7686d1047ed616db82c56ffc5 SHA-256: 004307f6981ecd2a93606ded7441f3f4e23e2f401184c3bce27cbcef02139ee3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free in-game currency, such as 'how-to-hack-roblox-accounts-2021-game-hack'. These links are identified as malicious redirectors, indicating a likely attempt to lead users to phishing or malware distribution sites. The document body and heuristics strongly suggest a social engineering lure to trick users into clicking these malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/431946152/how-to-hack-roblox-accounts-2021-game-hack In PDF document text
    • http://stomatolog-choszczno.pl/images/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/cm-daily-spins_GM406889139.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://stomatolog-choszczno.pl/images/free-robux-co_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_off00004a6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A6A 25028 bytes
SHA-256: 9c9c5724ea0231dc375c0cab7ab89c01d72bd41a6f891c0fff224ed408edecd7
font_01_sfnt_off0000845d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845D 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0B 18992 bytes
SHA-256: 91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505

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