Malicious PDF — malware analysis report

Static analysis result for SHA-256 dea37b9789e315d9…

MALICIOUS

PDF

45.2 KB Created: 2021-05-10 21:41:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: e646173d981c0bad7843487803d34959 SHA-1: f2fe569e8a9f0e511018ed347742779b7a53e3ae SHA-256: dea37b9789e315d9c000503cbf932faa15edc79e376c1e2f8299ff2e34275005
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures related to game hacks and free generators, indicating a phishing or scam attempt. The embedded links likely lead to further malicious content or downloads. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/https-oprewards-com-roblox-game-hack In PDF document text
    • http://parsbaft.com/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/safe-hack-for-coin-master-android_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_off000047c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C0 25400 bytes
SHA-256: ee539927657facf41b9185c13eb03be376c9437aeb8efe940a6325b504820d2a
font_01_sfnt_off0000821a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821A 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00008bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD9 18892 bytes
SHA-256: 7e4c897599b52b27b34daba7b0b8f8cea9db697bcd5ec7a1354cddc2b7f16f3b

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