Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58966dea73a3518…

MALICIOUS

PDF

36.6 KB Created: 2021-05-22 14:06:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7ebe86555968fd996f1419c602f328fb SHA-1: e06d917fb940048af9be73883de0c5d4f99b0718 SHA-256: d58966dea73a35181ef294d6b919a9b78fde35000f6056e6aa5e4bf08893d3ab
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks or free spins, indicating a phishing or scam attempt. The ML classifier also flagged the document as malicious. While no scripts were directly extracted, the PDF structure and embedded links suggest it's designed to redirect the user to a site that likely hosts further malicious content or exploits.

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-script-hack-game-hack In PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://ee.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-that-actually-works-2021_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_off0000316a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x316A 26340 bytes
SHA-256: 763cf89c28801bc6d82958442e2e05acf1df37407a3079f09a7458e8fb59a588
font_01_sfnt_off00006cc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC9 18580 bytes
SHA-256: c1944f3c26fd870ce0e5de863125d21882df0ce96ba9356e52db8af51b5248a2

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