Malicious PDF — malware analysis report

Static analysis result for SHA-256 99188c6a1e989dd6…

MALICIOUS

PDF

33.4 KB Created: 2021-07-03 17:49:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f5117cbf4e23eb0ba98ad6dfcbfee816 SHA-1: ec7a993053cfa14d0b09f9c680665d533ae08406 SHA-256: 99188c6a1e989dd6e77b723f2251ad29ae4e818954ae6deaa9e3ae15a9042a70
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 0.9980

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 http://netcdn.tw/app/431946152/best-way-to-get-robux-game-hack PDF link annotation
    • https://vierabyragazze.com/upload/files/roblox-redeem-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-how-to-get-clothes-for-free-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-codes-for-robux-free_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-free-name-change_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-bubble-gum-simulator-steal-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-hack-with-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-make-roblox-t-shirts-free_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-my-account-was-hacked-what-do-i-do_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/is-roblox-being-hacked-right-now_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-jailbreak-go-through-walls-hack_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
font_00_sfnt_off00002edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDD 21292 bytes
SHA-256: 2c819e95e3c1e24af16417108fc5726d449a447a42c45bbed50b166a01ce58ec
font_01_sfnt_off00005d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D50 19036 bytes
SHA-256: c8da355f218a8197946d9bc2af4f0065abef1a568fccd3035897a96bfc119434

Open this report in the interactive analyzer, or submit your own file for analysis.