Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ef0195a7c1f324…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 19:04:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d6a37982f05f86ffaafe5582bdb4b692 SHA-1: 6d9ba363028b0d2b3d5c4292592e8901f3f2440c SHA-256: 68ef0195a7c1f324d26ee2b678f0a708c4e743ee0e742c5fbd90212e74eb02c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting the malicious site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-spins-hack-game-hack In PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/play-coin-master_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/top-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-lua-course-free_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/com-roblox_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/app-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/roblox-online-hack_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-robux-limited-time-game_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/script-executor-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/pubg-uc-carding-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-scripts-for-roblox-studio_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/pokemon-go-free-codes-october-2021_GM1094591345.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://alsworld.com/uploaded_files/userfiles/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_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_off00003253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3253 22912 bytes
SHA-256: 51044fe7bc387fa43fbd7c79ebd736de0fdde8c103e00492faee328145e3dc08
font_01_sfnt_off000065a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A9 18344 bytes
SHA-256: bda74eba5f039297e511dddd57f660cdccd001576784cab1ba2dc4ebdf08fb85

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