Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59533bdb07f4943…

MALICIOUS

PDF

31.7 KB Created: 2021-04-24 23:53:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 5d37bda372f5f1ecf14389083f91b7ef SHA-1: eb37f6886c03edcffb6357902d3179b966013ba0 SHA-256: a59533bdb07f4943bd9028cfd7dd9fa59ff3ea34b8a65d3a246d4343eed0a92c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, one of which, 'https://netcdn.xyz/app/431946152/constructeur-roblox-free-game-hack', is identified as a malicious redirector. The document body and embedded artifacts suggest a lure related to game hacks, likely intended to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent through link manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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/constructeur-roblox-free-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-draw-an-eye-on-free-draw-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-earn-free-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-jefftec.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/earn-free-robux-by-just-not-paying.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/ccv5-roblox-dbfp-hack-tuto-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-raindrop-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-be-all-black-in-roblox-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-change-username-for-free-nanoo.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-limited-faces.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/account-being-hacked-on-roblox-with-2-step.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000042c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42C5 27044 bytes
SHA-256: fe2e9dd03eac9ea5a171eed1572305eeb970a5782192ccf2d1e69e04846f4ec7

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