Malicious PDF — malware analysis report

Static analysis result for SHA-256 f202abe15e485805…

MALICIOUS

PDF

42.1 KB Created: 2021-04-28 08:31:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: d63fdf2ccc4fa35ea0c71450c90a4ddb SHA-1: 34189bf793847e3af3341e5347ddad69cd1f8b56 SHA-256: f202abe15e4858055e5c665d465dcced1699917e0b19a842fe4ca3c32cdbef86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, disguised as game hacks and generators for Roblox. The primary lure directs users to `https://netcdn.xyz/app/431946152/roblox-how-to-check-a-games-anti-cheat-game-hack`, which is flagged as malicious infrastructure. The document body also contains a call to action to access a Roblox generator, further reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/roblox-how-to-check-a-games-anti-cheat-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/get-free-shirt-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-apocalypse-rising-hack-script.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/synapse-free-download-roblox-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-developer-on-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-promo-codes-october-2021-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-robux-hack-2021-generator-cheat.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/vehicle-stereo-free-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-unlimited-robux-ad.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-no-hack-or-cheat.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-codes-2021-july.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_off000042bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42BF 26348 bytes
SHA-256: 0cc451706d0ba9826bcfc751b2504cfe49854cedd37da3efbbce773b55f120f1
font_01_sfnt_off000080e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E8 18996 bytes
SHA-256: d4fd8b8d0b8da5a5d75aab74fe4d06c23d57a020f8f73032a6465453d0b5b068

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