Malicious PDF — malware analysis report

Static analysis result for SHA-256 8498855da39e17df…

MALICIOUS

PDF

39.3 KB Created: 2021-05-24 16:30:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1176de5afbee4ea129762711a6fdb944 SHA-1: b78019dc6d8e2a67f395b1e47d9e4acce8649769 SHA-256: 8498855da39e17df09d8af99ba63b45df5c3f232ace18509edd07c5b767d847b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple lures related to 'Free Robux' and game hacks, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the lures suggest an attempt to trick the user into downloading or navigating to a malicious resource, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9513

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-exe-game-hack PDF link annotation
    • http://zarinnameh.ir/images/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-roblox-accounts-2021-with-robux_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_off00003ed8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3ED8 25160 bytes
SHA-256: 090d33fbb381b467681819f15ebeb38c15b352e0ae985c322ff0bf4d4dd87b0d
font_01_sfnt_off0000798a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798A 18012 bytes
SHA-256: 1e3fda203f08fe42ab00f6cef97e605bb68f7e374108f28afe3c353055d0c9d6

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