Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2323f338fd3b89a…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 13:50:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 83dfa7c3f7160bb2e2ccc99e2f9ab53c SHA-1: ff5dee47074ce8042be5f90af4fc8eaf81b30bb9 SHA-256: f2323f338fd3b89a6fa1c05b19ab52ce2eb5daaede1e764ce0422c3f71563ee9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The primary lure appears to be related to 'free generator / game hack' content, aiming to trick users into visiting the malicious URL. No scripts were extracted, but the presence of malicious links and the lure suggest an attempt to redirect users to a site that likely hosts further malicious content or exploits.

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/roblox-robort-free-mega-vip-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/earn-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/script-cheat-ninja-legend-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-on-coin-master-game_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_off0000304a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304A 21940 bytes
SHA-256: e680202b05f0df21a39377585acd4771d0b4f7d4e874a95ba1f1b5c531e3b77a
font_01_sfnt_off000060c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C7 19380 bytes
SHA-256: 82e9dfe6c53350ee1c9e6dde2f6ddb21f5631201cc2a6a7b31f3c084f15b72f5

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