Malicious PDF — malware analysis report

Static analysis result for SHA-256 55e4e2d78b703b46…

MALICIOUS

PDF

41.2 KB Created: 2021-05-19 12:21:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1481812ad1256c0b471548043d2120de SHA-1: c2ec129c89d6a0f4fdc5aaa9f377580207d987ea SHA-256: 55e4e2d78b703b4638653abf803fa8a0a55a0faca193f3fcc68cb8c4c3edb8f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and hacks to entice users into clicking malicious links. The document contains multiple embedded URLs, including one identified as a known malicious redirector infrastructure, which likely leads to further malicious content or malware downloads. The ML classifier also strongly indicated maliciousness.

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/free-spins-coin-master-2021-today-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/pokemon-go-free-quiz_GM1094591345.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-server-free-trial_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-groups-2021_GM431946152.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_off000047b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47B5 23556 bytes
SHA-256: f9e827d405077f615f84592e168fe7065792c6dc38762e551fec9457f02f6c6f
font_01_sfnt_off00007d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D37 18644 bytes
SHA-256: fb34871543d4e589edaa7b6b6daea61d4b413826d533968c66bf721badb2f47c

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