Malicious PDF — malware analysis report

Static analysis result for SHA-256 309fe751dee4fe4c…

MALICIOUS

PDF

31.8 KB Created: 2021-07-05 13:08:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a1b2c299dd35c975dec62cc8e44fc874 SHA-1: da88f3d339ad9676cf5000b4cb04db312e882e29 SHA-256: 309fe751dee4fe4c025f53f3e28b9307777fd0a785b1ee5ed7508013a38c629c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and generators to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. The document's content and embedded URLs strongly suggest a social engineering tactic to compromise users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/479516143/how-to-hack-minecraft-game-hack In PDF document text
    • http://perpus.i2s-learning.com/repository/free-admin-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-exploit-cheat-engine-67_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-hack-prohosts-org_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-jailbreak-free-keycard_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-ps4-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/packetofworld-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/best-groups-to-join-for-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/objet-gratuit-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-jailbreak-2021-hack_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_off000029cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29CB 21868 bytes
SHA-256: 06eceaf18d97d8e6cd9c25236c2e556458260d96f796327652dc70314ff4ebbd
font_01_sfnt_off000059bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59BC 18332 bytes
SHA-256: 532c884a4d8ab194113d3323d4275cc83154e954f62235f4e0d0243afa765cb8

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