Malicious PDF — malware analysis report

Static analysis result for SHA-256 f039b449fb05e547…

MALICIOUS

PDF

36.5 KB Created: 2021-07-05 23:08:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: bd3b53984c879d5b7b3366f4568c09f7 SHA-1: 8ea5f2b70ff13fba48997d28689df757d46de702 SHA-256: f039b449fb05e5471309fccbc721de94ec1bac8e61b0eb40c27a5a0b417d8a19
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristic firings indicate a lure for game hacks, likely intended to lead users to phishing or malware download sites. No scripts were extracted, but the embedded links 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/406889139/mangocheats-com-hack-coin-master-cheat-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hack-without-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-menu-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/fornight-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-mod-hack-apk_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-of-roblox-2021-in-game-like-counter-boxing_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-from-watching-ads_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_off000037af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37AF 23144 bytes
SHA-256: 940d81152dd670fd90a4e235d0d5b242d63eca02fb617288e948c313a37d5739
font_01_sfnt_off00006bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC1 18428 bytes
SHA-256: 9287b0c47ad934f43b8e17144c07c35ed04b9c51a026f2b6b881bae896865273

Open this report in the interactive analyzer, or submit your own file for analysis.