Malicious PDF — malware analysis report

Static analysis result for SHA-256 e31ce5f0c6020002…

MALICIOUS

PDF

43.8 KB Created: 2021-05-18 04:50:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 98595801fee61525213701b74ba77f34 SHA-1: 50d3bddffe8bf6ae12a4daffe51c76923467cfca SHA-256: e31ce5f0c6020002cbef1f211e68bc72d484e2bee6d36f4216fa29c3ec60e8b6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The heuristic firings confirm these links point to known malicious redirectors and a lure for game-related cheats. While no scripts were explicitly extracted, the nature of the links and the ML classification suggest an attempt to exploit users into visiting malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/2021-free-spins-on-coin-master-game-hack In PDF document text
    • http://solidcommunication.ch/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/free-robux-net_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://solidcommunication.ch/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://solidcommunication.ch/images/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://solidcommunication.ch/images/roblox-fun-com-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000488b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x488B 24236 bytes
SHA-256: 2673d501daefea930c4a2387b1d7e91ad4936ac0ec91a0ad1a8d21f094a18221
font_01_sfnt_off00007ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA6 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8858 18288 bytes
SHA-256: 622f5559f42d42bdf895aa0dd0378bc93f6cb1528ecbdf5ac45ca29ab5b27cb4

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