Malicious PDF — malware analysis report

Static analysis result for SHA-256 63fa593824341ece…

MALICIOUS

PDF

43.9 KB Created: 2021-05-23 14:45:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8b91dae0da46b3e54063e6c9a98b70b7 SHA-1: e5d0e14126b445fbc1cb42b1606fda0c4453d40d SHA-256: 63fa593824341ece514513047e7a342d0338e6be66b03e02a489deff23a2cb73
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators, which is a common lure for phishing or malware distribution. The document body and heuristics confirm the presence of these malicious links, indicating an attempt to redirect users to potentially harmful websites. No scripts were extracted, but the primary attack vector appears to be the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7281

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/roblox-pink-free-robux-game-hack In PDF document text
    • http://www.jureclomas.com.ar/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://www.jureclomas.com.ar/images/coin-master-hack-free-spins_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_002_off000034b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34B0 32476 bytes
SHA-256: fbd750ee431b3fb38f029aec96bade98ac0620c1bb2e0fd607dba946983b6d5c
font_01_sfnt_off00007fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE9 2892 bytes
SHA-256: 8a555f5e8d4276aa853a8611ec0de9c7a0a8110e9b51cde8f80f2ad80d5d890a
font_02_sfnt_off000089dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89DD 18532 bytes
SHA-256: 62e9169d40109a3abf4bdf842601a34c83c90693a7fee2a3f682a11a81f7ba3a

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