Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5b62ec3a850f49f…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 17:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 026aaef248459d73c9de7a10e9a92f62 SHA-1: 0fa2a55ff386eb55cf83c75ea32c6c8549c01604 SHA-256: a5b62ec3a850f49fff5d7f18c9a8c95a3b1b322a550726e232a6cd1a4525bd01
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The document body explicitly mentions 'Minecraft Java Edition Code Free' and includes a call to action to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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-java-edition-code-free-game-hack In PDF document text
    • https://www.hobbypcb.com/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://www.hobbypcb.com/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://www.hobbypcb.com/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.hobbypcb.com/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://www.hobbypcb.com/images/free-minecraft-java-edition-account_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_off000033ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33CA 25524 bytes
SHA-256: 759b23ac5f829aa3ccbc82f214ac596440be037be8b8f6a1295cafbdb994c242
font_01_sfnt_off00006d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7E 18164 bytes
SHA-256: f60a0ad92d00317e2c15f806bb6b4e732b7ddb4bf4afc6afb4b51f1f749874bc

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