Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d6db947de57f3b…

MALICIOUS

PDF

43.8 KB Created: 2021-06-08 09:34:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 836e3b925c3998d93b57b3ce7eab82df SHA-1: 7319d43332aedb5a426bfbb1bb53ac38720bafe8 SHA-256: 84d6db947de57f3b9630781d3f601dafdd0954acc749d64d5b9c2ac04cc16ea7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks or generators. The primary lure URL is https://netcdn.tw/app/431946152/hack-visea-roblox-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/hack-visea-roblox-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-roblox-short-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-download_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-without-downloading-apps_GM431946152.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_004_off00004f49.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F49 24688 bytes
SHA-256: 998ac5e63683567229b195c0b14fbf42a0cc1efd9f2372a06e070b2f6b22f71d
font_01_sfnt_off0000881c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881C 18436 bytes
SHA-256: d4af9f1683840bea730b478b03eab55ed2e1b89e078d73cfc2052d80f7316b8a

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