Malicious PDF — malware analysis report

Static analysis result for SHA-256 464df9afa86cef09…

MALICIOUS

PDF

44.2 KB Created: 2021-05-17 05:12:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 65e2897d57078e40ff555c8fe772ab94 SHA-1: 1fb4746807b01380e96908b4bc9bd7eafc262fb6 SHA-256: 464df9afa86cef09c021400c7aa14aff9f6146c260a415125b0da5ba5a4e997e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary redirector URL identified is https://netcdn.xyz/app/406889139/coin-master-cards-free-game-hack. This indicates a phishing or scam attempt designed to lure users to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/coin-master-cards-free-game-hack In PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-cheats-2021_GM406889139.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_off0000485f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x485F 24828 bytes
SHA-256: ff603e0c35be764b2b18c8e21f2d8b2eb5e11eacf609b23d04d32b100d1afa9f
font_01_sfnt_off00008134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8134 2920 bytes
SHA-256: 03f8397bdf627aa5eb6acb233d3c5d547fa213245667a48a7f92829839117302
font_02_sfnt_off00008b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4C 17884 bytes
SHA-256: d54aa51eaaaa3e2864f0114713409e316145a0183ee6aba9be1e443db1dceb19

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