Malicious PDF — malware analysis report

Static analysis result for SHA-256 142b62718cf42042…

MALICIOUS

PDF

42.2 KB Created: 2021-05-21 02:11:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 4b7971a37e58aec66e2db4139092a3d0 SHA-1: c91250c2e8120bf48e38edb531fa3d1a422ab0c0 SHA-256: 142b62718cf4204285b8c03b18f079be9492109ebd51ef9091a4a43f5701e874
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links disguised as free game currency generators or hacks, directing users to malicious redirectors. The document body explicitly mentions 'How To Get Free Robux For Kids' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The embedded links are designed to lead users to potentially harmful websites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9506

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-for-kids-game-hack In PDF document text
    • http://regiefranchet.fr/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/robux-claimer_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000349f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x349F 36412 bytes
SHA-256: 2949068c1947c136f35173c9c04b305facae02280649c05f7a1e026c74e48fdd
font_01_sfnt_off0000834a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834A 18576 bytes
SHA-256: d8259766cf036cd113d0b26237eaaf1c704bfb1290fa2ba3336ef80e6ae93167

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