Malicious PDF — malware analysis report

Static analysis result for SHA-256 0873811947406713…

MALICIOUS

PDF

37.3 KB Created: 2021-05-23 16:39:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c5df4e4ba2468c77357bd531f6db590 SHA-1: fcd992863e74e095dbb768680788431a6c4da767 SHA-256: 08738119474067139ce87165fbe7b83ae6c97bfd2a237a8535bfbaf9de26cff9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a primary malicious redirector identified as 'netcdn.xyz'. The document body explicitly mentions 'How To Hack Someone On Roblox' and includes a call to action to access a 'Roblox Generator', indicating a social engineering lure. The presence of embedded URLs and the nature of the lures strongly suggest this document is designed to redirect users to potentially harmful content.

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/how-to-hack-someone-on-roblox-game-hack In PDF document text
    • https://www.belgium-archery.be/images/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-robux-co_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.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_off000035ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35ED 25244 bytes
SHA-256: 6c41dfd2542e04155ee769ace2e2ce407bd2139d1e92d66a460e2f7579337bed
font_01_sfnt_off00006f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F95 18608 bytes
SHA-256: eebf4fd0ce8e014a693b7448b6f63c7fd528199174cddc1a90a23252bff1a633

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