Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c6f585e8c306c9…

MALICIOUS

PDF

46.8 KB Created: 2021-06-09 04:25:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3d4de22017985dbbf4b4f4ba033a7b69 SHA-1: 1f5fabea461b2b91c3b3880fbd33ca34d8ab63eb SHA-256: f0c6f585e8c306c90f30c153e41f2d5e845b0834050f2c640690a076bb643b28
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 0.9748

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.tw/app/431946152/como-ser-hacker-sin-descargar-nada-en-roblox-game-hack PDF link annotation
    • http://io24.com.ar/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/get-me-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-counter-strike-hacks_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coinmasterfree_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/hack-blox-hunt-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/i-need-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/pokemon-go-free-quest_GM1094591345.pdfIn PDF document text
    • http://io24.com.ar/images/cheat-engine-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-06-accounts-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-many-villages-are-in-coin-master_GM406889139.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_004_off00004f9c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F9C 24372 bytes
SHA-256: b3bbd28a1859da458a98cc4f5a94f7edd829b386e3518d098a793368b53711cd
font_01_sfnt_off00008763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8763 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00009125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9125 19192 bytes
SHA-256: 4f43d9846dd31cf5b337093d825dff2e80d15240e53489a1a36e17452ccf82a4

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