Malicious PDF — malware analysis report

Static analysis result for SHA-256 684817da37ebeced…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 16:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 389f2213989dd32e45dd53311aaeac0c SHA-1: 5e3070ad7fe156ffd5eeb11629285a0a934e31fe SHA-256: 684817da37ebecedc0f67d5cdc4212d640ba8235f85f5ffa22bebc438a280ddf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising a "TikTok Free 10K Followers" generator and other game hacks. The primary malicious URL identified is http://netcdn.tw/app/835599320/tiktok-free-10k-followers-game-hack, which is flagged as a known malicious redirector. The document body and heuristics indicate a lure for potentially unwanted or malicious content, likely leading to further compromise. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/835599320/tiktok-free-10k-followers-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-zamasu-dbn-prealpha-hack_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/roblox-download-ps4-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/auto-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/robux-freebies-hack_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/cheat-engain-mac-for-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-daily_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_off00002f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1B 22716 bytes
SHA-256: 158c24907356d7ad31954711965f7cbeefea526a03c99cda1d384094e5a723d4
font_01_sfnt_off000061b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 18488 bytes
SHA-256: 2416c460d1f78d1c62873c294cedc4ad9762f98d5433bd33fe3ba440df209c46

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