Malicious PDF — malware analysis report

Static analysis result for SHA-256 b017905361862377…

MALICIOUS

PDF

36.7 KB Created: 2021-05-22 03:36:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cb5368373dc466ca611a5d215bcc838d SHA-1: dc6f604dc2b0d17fc87c5e394df7a3274289a00d SHA-256: b017905361862377f0e4002e4daa7a5b240f8d64e82e9f8105c88f3fd24e440f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of 'Free Robux Generator' and 'Game Hack' to entice users. It contains multiple embedded URLs pointing to redirector infrastructure, specifically identified as malicious. The document body also contains text and links related to game hacks and generators, reinforcing the lure. While no scripts were explicitly extracted, the presence of malicious redirector links suggests the document's primary purpose is to lead the user to a malicious website, likely for further exploitation or credential harvesting.

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/free-robux-generator-no-verification-2021-game-hack In PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-demon_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-guide-to-free-spins-and-rewards_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
font_00_sfnt_off00003409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3409 24496 bytes
SHA-256: e629fc373af728eaa1cfcdfbf916f9b31749c431d5575fd96c7a72ac3d0ddd88
font_01_sfnt_off00006bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC2 19004 bytes
SHA-256: d45ec0ea85e3f4da21cb27ccd2cd6df352304457fff04a0939a67aeffe4f8bf1

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