Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca091c4c364b7216…

MALICIOUS

PDF

49.3 KB Created: 2021-06-02 09:56:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: df8a72ae878a99db22cbf51cb10ffd35 SHA-1: 59dfe2155ca09897eb46949cff0045142cee1fc4 SHA-256: ca091c4c364b7216814fc1298b211b46e8bbf23875ead1810b8007e5a9664a5c
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 cheats. The primary link identified is 'https://netcdn.xyz/app/431946152/cheat-roblox-speed-simulator-2-codes-game-hack', which is flagged as a malicious redirector. The presence of a 'download button' heuristic further suggests a user-driven action to initiate a malicious download or redirect. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/cheat-roblox-speed-simulator-2-codes-game-hack In PDF document text
    • http://caraless.com/images/coin-master-el-tiger-card-free_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/earn-roblox_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/mcpe-master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/free-coins_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://caraless.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://caraless.com/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://caraless.com/images/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51DB 27268 bytes
SHA-256: 6a9c9e893ff574fef3d33ef80d05443f63eabb95adf9daf736cdad602301e179
font_01_sfnt_off00008e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E73 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B1A 19276 bytes
SHA-256: d050c114a3ae860e1fede188d17e80a43cc8d51a4d3d59db0f4773720ff6e482

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