Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7b37174d7a94b4…

MALICIOUS

PDF

33.5 KB Created: 2021-07-19 07:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 69b42997e21b2391249c849d213937f4 SHA-1: bdd2b58db732178a055a7c07859e7bd358e3950f SHA-256: 6e7b37174d7a94b43558422d9ec590442aab161e3257a932b89b66bcf50d9bc6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generator' or 'game hack' lures. The primary link, http://netcdn.tw/app/406889139/coin-master-free-spin-and-coin-links-game-hack, is flagged as a game hack redirector. The document body and embedded links suggest a social engineering tactic to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://netcdn.tw/app/406889139/coin-master-free-spin-and-coin-links-game-hack In PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-robux-site_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
font_00_sfnt_off00002de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE4 22900 bytes
SHA-256: 848f29e8d105967e9666bc342e28ad7c832d5f82ceb0466d79a9221c132ec710
font_01_sfnt_off00006143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6143 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2