Malicious PDF — malware analysis report

Static analysis result for SHA-256 974ed6d52feda54a…

MALICIOUS

PDF

34.6 KB Created: 2021-06-25 17:38:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: dc6083e5f059bfd606b41c30ac50cc71 SHA-1: 783bbc05823486affc12e3e7a05c76f16e65e06e SHA-256: 974ed6d52feda54af98c38a3aab2e98fa574364c92fbe69a910320a8bf5b5e5d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and free item generators. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the deceptive nature of the document. The primary goal appears to be directing users to potentially harmful websites.

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.co/app/431946152/games-that-give-free-items-roblox-game-hack In PDF document text
    • http://zarinnameh.ir/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-a-free-vip-server-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-use-editthiscooke-to-hack-accounts-in-roblox_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-5x-coins-anime-cross-hack_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/case-clicker-hack-roblox-script_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-map_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/clothes-for-roblox-free_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://zarinnameh.ir/images/stella-beta-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-marketplace-free_GM479516143.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_off00003044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3044 22208 bytes
SHA-256: 1216eae5de25728d60f1e32159f104aa5199526581a0de6087e9df84ce3773ab
font_01_sfnt_off0000612e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 19412 bytes
SHA-256: 26e748188a0a551330a86182887f5d78051209d93eb274fb8b81411563319c39

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