Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b145e8b6fd7f612…

MALICIOUS

PDF

35.7 KB Created: 2021-07-02 03:45:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0d021cf3e4fb531b4861e96a366e4090 SHA-1: 76dcdfbe3d7906c3b535b92af427f401bf6a439e SHA-256: 7b145e8b6fd7f612575a0745fca71d0906d83313e1b208bb5fcc690216afb9cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as "free generator / game hack" lures. The document body and embedded links strongly suggest a social engineering attempt to trick users into visiting these sites, which are likely used for malware distribution or phishing. No scripts were extracted, but the heuristic firings and numerous URLs indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/best-free-non-virus-roblox-exploit-game-hack In PDF document text
    • http://sd-olimp.hr/files/how-to-make-the-animation-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/youtube-free-robux-october-2021_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/robux-cheat-2021_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/hack-dragon-ball-final-stand-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/roblox-hack-2021-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/coin-master-hack-2021-iphone_GM406889139.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
font_00_sfnt_off000033ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FF 22472 bytes
SHA-256: 4ad344f77c018bd3c5362358b7e5e218a18a3b4b5bd23ab9bafa2df977f32c85
font_01_sfnt_off000065e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E7 19324 bytes
SHA-256: aadaf5f1ca5845fa19752d149b6dc329f44db0e16cc280f773d9683502b68457

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