Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f400229970b4b26…

MALICIOUS

PDF

52.0 KB Created: 2021-06-08 14:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d180e75efa944696786da4f406eae3d6 SHA-1: a12e4495c97d445410aff8f14f9f015e8ff77bf0 SHA-256: 2f400229970b4b2688f5d21d0cae0f5a0b4f8151f392459db7e87760f7cf0dcf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and potentially malicious content, disguised as game hacks and free currency generators. The heuristic firings indicate that the document links to known malicious infrastructure and employs a lure for free game-related items. The embedded URLs likely lead to a second-stage download or a phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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.tw/app/431946152/begone-nerds-roblox-hacking-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/hack-executor-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-games-by-admin_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-roblox-jailbreak-hacks_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-cheat-on-roblox-twisted-murderer_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A5 27172 bytes
SHA-256: 78ad1ff6d68d63546c281bc39f100f02f6edcfd1e456ce12a83f2fcf9952a2f6
font_01_sfnt_off00009094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9094 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00009a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A50 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off0000a6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F8 18764 bytes
SHA-256: 0dd51e760c369f07cd5f28f0ca3597576b005d99f0b90496c704aabb5e793551

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