Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7fed42400e74d61…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 20:19:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 4e670265abc2b40b7eef9fc01dcd4c37 SHA-1: e5f5b989ed6a9693704538a2b073e9ec518669ca SHA-256: f7fed42400e74d61fcb230f993c2d88308c4407215559f263c614427f0493829
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack generators, indicating a phishing or scam attempt. The document body and heuristics confirm the lure is related to free game items and cheats, directing users to potentially harmful websites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/431946152/roblox-gift-card-for-free-game-hack In PDF document text
    • http://sd-olimp.hr/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-robux-no-human-verification-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/hacking-in-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/cheat-indetectable-roblox-fantome_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/how-to-get-free-robux-october-2021_GM431946152.pdfIn PDF document text
    • https://www.sd-olimp.hr/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/those-of-us-who-remain-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://sd-olimp.hr/files/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://sd-olimp.hr/files/is-roblox-free-on-ps4_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_off00002df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF6 23160 bytes
SHA-256: 2f3b27bbb689b896d4b57a79150b0c1fa8dcf3bccf04115b3c1ecd60c07ae6e7
font_01_sfnt_off00006133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6133 19048 bytes
SHA-256: 36d692819cd4052ea0b92a15cd52fa98a127e8d11e0430d7a0f06642361bda99

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