Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e6d1ebf383e0d34…

MALICIOUS

PDF

34.9 KB Created: 2021-05-21 11:06:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fdfa69f67b62fc875a10c7e8a378cb7f SHA-1: e7c520a1b95c27e78605534bf9ca27fd67192476 SHA-256: 8e6d1ebf383e0d348262c0cf852dcf237ca2a9bb360a710248af3faebf98f3ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one pointing to known malicious redirector infrastructure. The document body and heuristics suggest a lure for 'free Robux' or 'game hacks' to trick users into clicking the malicious link. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-games-game-hack In PDF document text
    • http://elib-sd.msj.mis.sch.id/library/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elib-sd.msj.mis.sch.id/library/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://elib-sd.msj.mis.sch.id/library/repository/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib-sd.msj.mis.sch.id/library/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elib-sd.msj.mis.sch.id/library/repository/free-coins-coin-master-2021_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_off0000308c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x308C 23864 bytes
SHA-256: c44affb5b81b9454bf606f6d8977f03711fbe17a86f8c5486142ccfff91990e6
font_01_sfnt_off0000667b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667B 18500 bytes
SHA-256: 50954281d46d1092d2c36c5fba9e04257001c8c7e5b0c8732206987489559ecb

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