Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd981b27213052c5…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 05:24:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 9ec25897f6107e78e8943e4fb5f4e2cf SHA-1: 60b629d5a4dceb3a9ba0d36296ea0654a738cdd6 SHA-256: fd981b27213052c5b147add63e7c704bcf7aaa0cb4755003d2c3d8b662c6ef6c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to sites offering 'game hacks' and 'free robux', a common lure for phishing or malware distribution. The heuristic firings indicate that the embedded links point to known malicious redirector infrastructure. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it is designed to trick users into downloading further malicious content.

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-cheats-and-roblox-hacks-game-hack In PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-download-roblox-cheats-hack-tool-v2-3_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-robux-free-no-download-quick-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/pastebin-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-free-robux-gratis_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-join-free-roblox-builders-club_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins-and-spins-link-2021_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_off0000301e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301E 22348 bytes
SHA-256: 70e62027104a47170b488c6013c279c40b7dfb472f48b274fc9bd0b4ef3ab73f
font_01_sfnt_off0000620e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620E 19100 bytes
SHA-256: ac4d70a444393b14b69a054aae4150e4bfc4dbcdd5cb3e5e72e961d5b745db7f

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