Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89f8cd228b9f0f2…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 02:38:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2ab903bc9e64d603d1734788de0f08fc SHA-1: 758d545a3a0121851d4246195ab8b3a18aff06b4 SHA-256: f89f8cd228b9f0f2c09f12d59314a20cd8f5617b67f0f1e1d1682aee9283accd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics suggest a lure for game-related cheats or hacks, likely intended to trick users into downloading malware or visiting further malicious sites. No scripts were extracted, but the presence of embedded URLs and the nature of the lures strongly indicate a phishing or malware distribution attempt.

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.tw/app/406889139/how-to-hack-coin-master-with-root-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/actual-working-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-roblox-arsenal_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-often-pubg-uc-flare-up_GM1330123889.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/c-code-for-roblox-level-2-hacks_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/codes-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-have-bcc-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-pants-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-personal-information_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_off0000315b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315B 22596 bytes
SHA-256: 55b00ac0a284a7912a5863aca4978ff0a7c627f1c53d7a0ea973a16003a78dcd
font_01_sfnt_off000063c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C2 18532 bytes
SHA-256: 20637ff70b6c74965f19f977f66c5a6202ab351393aa3df1687bc9e39f472cc5

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