Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd54c62a7f6ee19…

MALICIOUS

PDF

47.8 KB Created: 2021-06-09 03:28:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2240d81407fa025fe88db37daf67932e SHA-1: a5249a878b5abc229c639bc9bca3bfcd658e4f48 SHA-256: 2fd54c62a7f6ee194f3d4c9929f9ec9f53a9eae39f0e30f79e89bd72b5a9a938
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free game hack" which redirects to a malicious URL. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/roblox-radio-free-game-hack In PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/pokemon-go-free-pokemon_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/kids-games-free-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5258 24556 bytes
SHA-256: 4c1ab5f4299eb7b2e39006af417e930d148f0afc9e090054572774e987684c47
font_01_sfnt_off00008ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB2 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000975a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x975A 18472 bytes
SHA-256: 1e9c4fc78e0307574a09173089fc8376260b4763d83be780234ba7cc734d148a

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