Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3b7a49ebd89a12…

MALICIOUS

PDF

35.3 KB Created: 2021-05-23 12:09:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 80b9fe57ff5282f2aa95ddf1faa4e497 SHA-1: dbe77fcf310938168de9bf2daf54835a2791360c SHA-256: fd3b7a49ebd89a12309940fb0af2f11cbe983b297307d8559eb163b2f365e9b2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/479516143/how-to-create-a-minecraft-server-for-free-game-hack PDF link annotation
    • http://www.alrashed-alsaleh.com/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-become-a-hacker-in-roblox_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_002_off0000318c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x318C 24596 bytes
SHA-256: 949728dfbb7456aacf533cc35e0360b89c16404cdded990146109b8ae6ea8727
font_01_sfnt_off0000696e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696E 17988 bytes
SHA-256: 060fb71443e6007603a371ac142d4c0d51e0ba8cefae348522c79638c30c3a2b

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