Malicious PDF — malware analysis report

Static analysis result for SHA-256 b46124168a506f3c…

MALICIOUS

PDF

36.1 KB Created: 2021-05-22 00:09:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c1fa70c6ef98ba4af1761a9597e30848 SHA-1: 2e38bb1a46ed9998d4a7fe74ec032b8c860a0c61 SHA-256: b46124168a506f3cb9e487fa030078afd944ed6cd764872f431cac2eb3b268d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically disguised as game hacks or generators. The ML classifier also flagged the PDF as malicious. The document body contains text and links related to 'Minecraft Free Online Games' and a call to action to download a generator, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/minecraft-free-online-games-game-hack In PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-spin_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-generator_GM479516143.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_002_off00003506.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3506 24752 bytes
SHA-256: 3298f3dd414e19423cf80b6d49cf5916f25025ee8a53d3087a0a1a430a407ee2
font_01_sfnt_off00006d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D49 17900 bytes
SHA-256: 4b77619cba729584a62e96e7fd69b59749ae88ba583596c01091ec51b146d7ca

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