Malicious PDF — malware analysis report

Static analysis result for SHA-256 74dfa814bd423352…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 12:14:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 39462df7321dd83a873507303ec06f8b SHA-1: f9fcc9b9f60bee7712453bce67331b6089c4cd7e SHA-256: 74dfa814bd4233525b63ed3dd855d555a6b8ce1d2497ae19ccc9ceabf7faa8ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lead to lures for game hacks and gift card generators. The primary malicious link is http://netcdn.co/app/431946152/free-gift-card-codes-generator-roblox-game-hack. This suggests the document is designed to trick users into visiting potentially harmful websites, likely for credential harvesting or further malware delivery.

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/free-gift-card-codes-generator-roblox-game-hack In PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-delete-admin-pads-without-hacking-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-2021-promo-code_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-hack-ohne-handy_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hacking-denisdaily-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/pastebin-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/zombie-rush-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-cheat-net_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-robux-20219_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-draw-an-eye-on-free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hacks-for-roblox-v5-fast-and-furious-updates_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-cheat-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3053 22756 bytes
SHA-256: cc0cae81dc006b894bfd99857c60c0e40211b0ab7f6b40cf895fafc2ea83c9ee
font_01_sfnt_off00006344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6344 19048 bytes
SHA-256: 68818696acd1121974a5433ff82c2aa9c238d5b7e38d813a18a1109308b5e46e

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