Malicious PDF — malware analysis report

Static analysis result for SHA-256 f70ecee4a39b4202…

MALICIOUS

PDF

33.6 KB Created: 2021-06-29 13:06:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e48465259e4a4a8942085c1bbf158415 SHA-1: 1de563079acf5182f80d704af6009e17b117d364 SHA-256: f70ecee4a39b4202abacbdb59350849ee0aed3bc43f0f50aa6718f10e960916c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lure users with promises of game hacks and free in-game currency. One critical heuristic identified a link to known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/roblox-jailbreak-noclip-cheat-engine-script-game-hack. This suggests the document's primary purpose is to redirect users to potentially harmful websites, likely for phishing or malware distribution.

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/roblox-jailbreak-noclip-cheat-engine-script-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/admin-commands-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-pants-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-natrual-disaster-survival-hacked_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/link-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pinkant-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-ps4-games-like-roblox_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_off00002e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5F 21484 bytes
SHA-256: ada8bab59846844a2c9658572aa134b175d99b046b8dfc5b31a49f90b0534e3b
font_01_sfnt_off00005d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D65 19388 bytes
SHA-256: a3e593c19f8b58b5f61353ad86ef77135801a75fa18bb77b173f9903680b6e53

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