Malicious PDF — malware analysis report

Static analysis result for SHA-256 575b5e92eda6c668…

MALICIOUS

PDF

43.4 KB Created: 2021-05-13 12:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 14c13fb50f780f79c75a20dbe7a06520 SHA-1: 0d7a066a3b81b7e6bf8d0de683e218f33abf2c7c SHA-256: 575b5e92eda6c668acc0ab8e5232d7800ce38cb2809c22109ff3c11a6433f09b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a call-to-action lure related to game hacks and free currency, directing users to known malicious redirector infrastructure. The embedded document body text and heuristic firings strongly indicate a social engineering attempt to trick users into visiting a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for further malicious actions upon redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-get-free-robux-2021-easy-game-hack In PDF document text
    • http://sportagon.be/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/mcpe-download_GM479516143.pdfIn PDF document text
    • http://sportagon.be/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://sportagon.be/images/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://sportagon.be/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/how-to-hack-mcpe-master-coins_GM406889139.pdfIn PDF document text
    • http://sportagon.be/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://sportagon.be/images/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F9 26940 bytes
SHA-256: bc0332843f70ca45ad522dcf5128284578a0ad42bad4ec82d2df3a63c592500f
font_01_sfnt_off000084b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B7 19092 bytes
SHA-256: cc4041fc50bd2ea9a1268967e32916156e3a634973a216864dd7f220ceb04504

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