Malicious PDF — malware analysis report

Static analysis result for SHA-256 9600977904b04fd3…

MALICIOUS

PDF

41.9 KB Created: 2021-05-21 06:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7173c9bf4032772f39b41a84e3e4d69e SHA-1: 13708d8ef5644d01ddc161c82ca37dd1e2e58095 SHA-256: 9600977904b04fd3b245cc90814546ae2d16c4aa08f6318c3d0e7af256a15829
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external resources, disguised as a lure for free in-game currency. The heuristic firings indicate these links point to malicious redirector infrastructure. The document body, though partially garbled, contains phrases like 'CLICK HERE TO ACCESS ROBLOX GENERATOR' and URLs that reinforce the scamming nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9506

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-get-free-followers-on-roblox-game-hack In PDF document text
    • http://medinup.pt/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://medinup.pt/images/claimrbx-free-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_off00003367.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3367 36144 bytes
SHA-256: 4ad6f3d763f7a3bc9d15ac1187d462f137af0f256d37047c79fa84c99a861d58
font_01_sfnt_off00008317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8317 18216 bytes
SHA-256: d67de5b0316638aa6e49d387c798cf240806a637f86836bb818b6b87100bf276

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