Malicious PDF — malware analysis report

Static analysis result for SHA-256 363f48863592ecbb…

MALICIOUS

PDF

41.3 KB Created: 2021-05-21 04:38:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a8dc1a76d42639bfb50f12182d1f4c1b SHA-1: 60ad080dfa7030c95e18c8041f47fb2813c63667 SHA-256: 363f48863592ecbb0ee679df42df32f47634d17018d810511d7a17983337719b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a "free Robux generator" which redirects to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a potentially malicious site, likely for credential harvesting or further malware delivery. The presence of multiple PDF files hosted on a seemingly unrelated domain further supports a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7534

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-robux-glitch-2021-game-hack PDF link annotation
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000033c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33C6 28956 bytes
SHA-256: afe166ea88127a4b61f5651b835847fab5659927254c4342328b757263ef9325
font_01_sfnt_off000074a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A3 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00007e54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E54 18880 bytes
SHA-256: e0b2f5218feb7ccbc61643c87456d5d0b0f9dddc4acedfb65bbbea4baf30e52d

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