Malicious PDF — malware analysis report

Static analysis result for SHA-256 8644518bf975d75e…

MALICIOUS

PDF

36.8 KB Created: 2021-07-03 14:59:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3beb68a266b61ac7697618038cc66b2e SHA-1: 6a4969b31babd79e7588dcce30c895266f88e3e1 SHA-256: 8644518bf975d75e9b06cfdfca25f75c8c235d7b5aeb01bee860afa0d293c857
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free in-game items. The heuristic firings confirm these links are associated with malicious redirectors and game hack lures. Although no scripts were explicitly extracted, the nature of the embedded links suggests a potential for further malicious actions, such as downloading additional payloads.

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/how-to-get-free-pet-food-in-coin-master-game-hack In PDF document text
    • http://moneymaker-gold.de/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-exclusive-free-items_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://moneymaker-gold.de/files/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/tiktok-free-trial-likes_GM835599320.pdfIn PDF document text
    • http://moneymaker-gold.de/files/fps-free-roblox_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-for-quest_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-best-robux-app_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/promo-codes-for-free-robux_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_off00003935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3935 22944 bytes
SHA-256: 5622faa5e38b579f4854e4ef158e2feb3f50c8ae13ce193dd7c6016ea83494dd
font_01_sfnt_off00006caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAA 18492 bytes
SHA-256: 3b8d0933b66d4a3ba90188940e5d7ed21cf944b8acae8725630a3c3be9b63f2c

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