Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e0ee61159ae406…

MALICIOUS

PDF

36.0 KB Created: 2021-05-22 05:16:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d869df332ccfac25ec19fa5980b59960 SHA-1: 1ce9227205a09a75a363ce0c23aaefc669c6e64b SHA-256: 37e0ee61159ae4069a7cb01df9545b79ed941f4149ce8feaa22b9be5b4ce8163
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting a 'free Robux' generator. The document body and heuristics indicate a lure designed to trick users into clicking these links. While no scripts were explicitly extracted, the nature of the links suggests a potential for further malicious activity upon user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-help-free-robux-game-hack In PDF document text
    • http://pa-kabmadiun.go.id/images/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/roblox-ftw_GM431946152.pdfIn PDF document text
    • http://pa-kabmadiun.go.id/images/roblox-generator_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_off00003209.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3209 24880 bytes
SHA-256: 971a6a307f2f13e7c01ae7fb352787c1b0cdb345b376597d50092353c2408798
font_01_sfnt_off00006b89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B89 18264 bytes
SHA-256: 4686decc205f725eac2af31d2bb610515d085fb80a4fbb870416018a21b04127

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