Malicious PDF — malware analysis report

Static analysis result for SHA-256 d625841b75c560e8…

MALICIOUS

PDF

36.6 KB Created: 2021-05-20 18:14:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1811b573a16568006f936631d5e36eb5 SHA-1: 8bac054c524d6f64cca3cab09fea39717cccc4b9 SHA-256: d625841b75c560e8946adf4da111a0fd3074fd9c2fc8d3be0596a68f240dea10
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to websites that are either known malicious redirectors or host potentially malicious PDF files, disguised as "game hacks" or "generators". The presence of a download button lure and ML classification further supports malicious intent. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-play-now-for-free-game-hack In PDF document text
    • http://schoolsupportandbeyond.org/images/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-robux-no-verify_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_off0000326b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326B 24980 bytes
SHA-256: 35c0dba387284062da24039e79534f8dd6e02742f3c7c2d339cb1f0f372dc9d7
font_01_sfnt_off00006c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C66 18672 bytes
SHA-256: 6ac13014d956568d3c4459397943de1ac554c9b5ba0cd330a45a51033578dd02

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