Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc9cfac89f53f43…

MALICIOUS

PDF

33.4 KB Created: 2021-06-25 13:18:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 071a977fa790d29498e44d142ddaebe5 SHA-1: 6a5b16bbd9a6b58b879580fb4febe531d5ac4560 SHA-256: abc9cfac89f53f43000cd7d6aa046ea514f1392e8294c78b1bd9c032b49fa0f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering 'game hacks' and 'free robux', which are common lures for phishing and malware distribution. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that these links point to known malicious infrastructure. The document body and embedded URLs suggest a social engineering attempt to trick users into downloading further malicious payloads.

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/hacker-simulator-code-roblox-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/honest-robux-hack-may-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/infinite-jump-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-admin-commands-on-any-game-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-map-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/whats-the-best-free-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hack-de-robux-al-instante-gratis_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-be-a-parkour-ninja-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-install-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-on-pc-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-evite-ban-roblox-hack_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
font_00_sfnt_off00002e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E02 21224 bytes
SHA-256: cbf3a7287144cc3fbdcef1ba8beac847c6118e97ddeec36bd298d89fbd120da7
font_01_sfnt_off00005c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C00 19452 bytes
SHA-256: a4c4523c3d2fa142e08e33b3ac707abb02fb58ca54375897b990e979f1341cd3

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