Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ba554c7b778e18…

MALICIOUS

PDF

33.1 KB Created: 2021-06-25 07:13:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b422ae62349192eaef4de8c7d0c6e405 SHA-1: 08076b57221eea615807a621522eb099c3697ee3 SHA-256: d7ba554c7b778e18c999bba3c45a0cc58d26da551825041eee8617d447f06b3a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and generators. The document body and embedded URLs point to a lure for 'Roblox Form Free Game Hack', which redirects to the malicious URL http://netcdn.co/app/431946152/roblox-form-free-game-hack. This suggests an attempt to trick users into visiting a malicious site, likely for credential harvesting or further malware delivery.

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.co/app/431946152/roblox-form-free-game-hack In PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-map_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-buyt-any-item-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/robux-cheat-codes-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/biggest-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/robux-hack-download-android_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/edit-this-cookie-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/roblox-account-taker_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/roblox-hacks-for-hilton-hotels_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/free-item-game-roblox_GM431946152.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pustaka.stie-pembangunan.ac.id/repository/wie-kann-man-free-robux-kriegen_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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_off00002a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A17 22768 bytes
SHA-256: 4dd8b746e4489223fb4322525ecbcd2265a0c500ef5c5ffe59f6e0a1b9d33303
font_01_sfnt_off00005d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D07 18908 bytes
SHA-256: 5bbcedf3747ba990377b867d4a18796015e57a452ecb7a81041189828aafc1e9

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