Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be66778210d24d3…

MALICIOUS

PDF

42.9 KB Created: 2021-05-13 14:09:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: aae339b073ee7626fce7b878865a714c SHA-1: e9bf9f440f56b404646170a506528f80b6e394c8 SHA-256: 1be66778210d24d3550e2ffa32a541f8fd6bbab6a80c65d5e749ba537a517ad6
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 0.9971

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-generator-no-human-verification-or-surveys-game-hack PDF link annotation
    • http://parsbaft.com/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/10-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://Buy.HoaxMC.comIn 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_003_off00004862.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4862 25280 bytes
SHA-256: 5a5e694a7927c512af8fb8463918309dabec87abb72ed3eb2280a0969de85585
font_01_sfnt_off000082de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DE 19156 bytes
SHA-256: b23a4dbd5b2cf0eeb4dbb5626642de4de2979fce29ecd3df28c5d1ef95471ce4

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