Malicious PDF — malware analysis report

Static analysis result for SHA-256 9791ee9c94288d54…

MALICIOUS

PDF

32.2 KB Created: 2021-07-06 12:33:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 63ffffe853e3c7e7b8f9243d897f1528 SHA-1: 206e83b8cfc285d3bb981694dea5dba003320cc9 SHA-256: 9791ee9c94288d54027faebb6303d5fc69fadc31584634e1b9e1b80b75c142a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and generators, directing users to a known malicious redirector URL. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and malicious links indicate a high likelihood of redirecting users to a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/how-to-get-hacks-on-roblox-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-robux-infinitos-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-hacking-users-no-verifacation_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-girl-hair-not-a-model-or-decal_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-prison-life-v20-cheats-noclip-and-btools_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-counter-blox-roblox-offensive-download_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-rhythm-track-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/meme-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-legit-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-roblox-accounts-walang-pin_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/game-codes-eu-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-unused-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-cards_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_off00002aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA3 21284 bytes
SHA-256: ae026ef1ea98cab1806f5e72b97a547963109d912c45f400f49ce0f9626aa2fa
font_01_sfnt_off000058fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FE 18924 bytes
SHA-256: 8cdc80fef149013af70ce1ea380cb26237808cf67cdf225847d5804ac9d16e08

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