Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70c75d254aefeb0…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 05:21:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 700d4b3b56800236cbed37b46bbbf302 SHA-1: 50d198836e31adad86bd5e76cdf682db90cd10ff SHA-256: d70c75d254aefeb096c943c833b07109b358817f4f6c5cc0331bc0c7f02a2ab0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' for games like Coin Master and Roblox. The document body and heuristics indicate a lure to trick users into visiting these sites, likely to download further malware or engage in scams. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.tw/app/406889139/coin-master-spin-free-game-hack In PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-shirts-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-mobile-24-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/where-do-you-send-roblox-vidoe-proof-of-someone-hacking_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-robux-for-free-editthiscookie_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-nfl-skin-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-money-in-mad-city-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/comment-hacker-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-heads_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/die-besten-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/giving-away-free-robux-cards-live_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBC 22792 bytes
SHA-256: c0f259a38af60be32d70724093da8af3c3f16433055a18efba8dfedd8c373a50
font_01_sfnt_off000061e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E1 18176 bytes
SHA-256: 9d64f59deaede30a08c34bcec3da02112a68e9d41babb799f745357d62befbf6

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