Malicious PDF — malware analysis report

Static analysis result for SHA-256 5199fc88ada739f2…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 09:32:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5e89fd54fd6f62dcb408bbf09c0ff5c6 SHA-1: ec96b2f84b6cdf1ae75575e0246a722388cd0e5b SHA-256: 5199fc88ada739f2a8d4cb606a7efd55334583df27e3b2b999ddf40af3444cfe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are associated with game hacks and free in-game currency lures. The heuristic firings indicate that these links lead to malicious redirectors and are part of a common game hack lure. The document body itself contains references to these lures and embedded URLs, suggesting an attempt to trick the user into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-hacks-2021-game-hack In PDF document text
    • https://www.cosmosdawn.net/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/offers-for-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/i-robux_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://www.cosmosdawn.net/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://cosmosdawn.net/images/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://cosmosdawn.net/images/rbxfree-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB4 25672 bytes
SHA-256: 890b189e65521b732060ae19445d6149094cd37c5ffbf1dadee8251ca474e728
font_01_sfnt_off00008285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8285 18116 bytes
SHA-256: 17974cef81917e5ef69542194afa433aff210173cc902887fbc2b56a9328dd03

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