Malicious PDF — malware analysis report

Static analysis result for SHA-256 482bd77f2fd05477…

MALICIOUS

PDF

47.2 KB Created: 2021-06-14 01:42:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: da7431c75d7ab5014edff7cd4bcff645 SHA-1: ed8975431a505767dde93079bc01322a2ff38f9a SHA-256: 482bd77f2fd0547762e85290514eab19a7d326b080a87377d6366854b9b70fe5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to potentially malicious infrastructure, masquerading as game hacks or generators. The heuristic firings indicate that these links are associated with known malicious redirectors and lure tactics. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a site that may host further malicious content or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-roblox-hack-com-free-roblox-hack-game-hack In PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000499e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499E 24900 bytes
SHA-256: be645d78231b65d0a674223cbbda01afab451bbe00729790a5afcfd1e5e0670d
font_01_sfnt_off0000834a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834A 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off0000952c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952C 18608 bytes
SHA-256: 130e85de8fa29429d4a744800e573061d84539827782e8700898185430cd4f8a

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