Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df4bc73ab437b4f…

MALICIOUS

PDF

46.2 KB Created: 2021-06-02 20:06:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 94142dd6ebba01646b01e92ac87913b7 SHA-1: bcb7d08d3b41117acb24e8fd38874e2954bf5cd7 SHA-256: 1df4bc73ab437b4f4ffe374f29e619ea809a3f50482d1c5bec9d0b976eb324a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, including one that masquerades as a 'Roblox Super Jump Hack'. The document body and embedded URLs suggest a lure for users seeking game cheats or free items, which is a common social engineering tactic. The primary function appears to be redirecting users to potentially harmful content or further download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.xyz/app/431946152/roblox-super-jump-hack-game-hack In PDF document text
    • http://ratchadatitan.com/UserFiles/File/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/give-free-robux_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/get-free-gold-cards-in-coin-master_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_off00004fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBA 27772 bytes
SHA-256: 91233e78513f5ef3368db84155f73f39ca86272e3c260a1ffb958c7bd7147602
font_01_sfnt_off0000902a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x902A 18924 bytes
SHA-256: d014daf125369d684d7fac43ae3f9c90c8a89a194ae0f1e12bef7fcb464ca8fd