Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a454681fac80b23…

MALICIOUS

PDF

36.2 KB Created: 2021-06-19 09:25:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ddfc3fdf5ec5617c41d11a89ef39155f SHA-1: c92ce8ebe6e83f7ae901bcc395fc57af10e6aeb7 SHA-256: 2a454681fac80b23fc1692a1978a40653eac35909adf735b881d23242a4d769b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that are identified as malicious redirectors, luring users with promises of game hacks and free currency. The document body and heuristics indicate a clear intent to drive users to these malicious URLs, likely for further exploitation or phishing. No scripts were extracted, but the presence of malicious links and the ML classifier output strongly suggest a malicious workflow.

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/pokemon-brick-bronze-roblox-where-to-find-exp-share-free-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-clothes-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-vip-for-free-vampire-hunters-2-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/re-ghoul-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-com-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roblox-followers-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-account-hack-system_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-how-to-look-cool-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000333c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333C 22636 bytes
SHA-256: 00265bb7c9bf5c7185ceb7d2ba39dc83178787beb0b6c9e7fbe374e3aab561f3
font_01_sfnt_off00006582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6582 20148 bytes
SHA-256: 47d9834a7435703948a74bd7deea2c403dcc0edb6b6b63c60e8ffff7733276dd

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