Malicious PDF — malware analysis report

Static analysis result for SHA-256 596c9bd09c090186…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 14:43:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1d17313ec27e27825593306a75fbc254 SHA-1: fbe6a98aaec41a478f1df1cd7b8dc7831b737ef5 SHA-256: 596c9bd09c090186282dced0874346af865785b97f8f942bfe49cabf6c333783
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, disguised as free game hacks or generators. The document body and embedded URLs suggest a lure for users seeking in-game currency or cheats, which is a common social engineering tactic. No scripts were extracted, but the primary malicious action is the redirection to a malicious URL.

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/479516143/how-to-host-a-minecraft-server-for-free-game-hack In PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-q-to-speedhack-script-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-add-robux-to-usesed-roblox-card-cheat_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-groups-2021_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_off00002fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCF 22432 bytes
SHA-256: 48a863f3db3fa0925b08cc98e076f18690209096a31fd2735be2de7247c10386
font_01_sfnt_off0000619c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619C 18276 bytes
SHA-256: 436412b7fb518003dd72d9755af4c5c221d015181f25d6fbbc5784d75a3c116b

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