Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6606669ec8a63ad…

MALICIOUS

PDF

40.7 KB Created: 2021-05-20 21:51:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c6740a78930074907c3b32349262d97a SHA-1: 230606ff5640beca11f08f54bad3b5cb32164b7c SHA-256: a6606669ec8a63ad32257a9e8bb22ca10020f6f87cebbbf1d82c5d4a15c24097
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' and 'game hacks'. The document body and heuristics indicate a lure to a generator or hack, which is a common social engineering tactic. While no scripts were extracted, the embedded URLs are the primary indicators of malicious activity, leading to a known malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7502

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/rbx-free-robux-game-hack In PDF document text
    • http://lawpatron.ru/images/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://lawpatron.ru/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lawpatron.ru/images/free-robux-group-payouts_GM431946152.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_002_off000033df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33DF 26488 bytes
SHA-256: 18466c73205eae9f83459238b17ca02f20a77c9b7273c028bd94bbd517dd7e5c
font_01_sfnt_off000071d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E78 18012 bytes
SHA-256: 03f7603bc8a5695bbd0c39958af3fcfd5a932cbc13eba7563a8e8ca8b5ca4208

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