Malicious PDF — malware analysis report

Static analysis result for SHA-256 516763ab5962469b…

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 21:30:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7d0f7067953b27741e16c92c37f15586 SHA-1: 69d2dde639ee6081b3c013c8cb55bfec834b4603 SHA-256: 516763ab5962469b7cc758149ef6e895ed90e3c1cb81851b2d504e1a71194cde
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' for games. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the ML classifier also flagged the document as malicious. The embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful 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/free-coin-master-spins-and-coins-for-daily-game-hack In PDF document text
    • http://adveos.com/images/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://adveos.com/images/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://adveos.com/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://adveos.com/images/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://adveos.com/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off00004911.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4911 25200 bytes
SHA-256: 8fb2dddb8bdc0be22a71d8598736124bc7c87624721dd31a6104e4d353ecb27f
font_01_sfnt_off000082a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A3 18480 bytes
SHA-256: 0d8a36892a593a52a07be53add068acf830a96b26d837b0e63e846bae8b7a7a5

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