Malicious PDF — malware analysis report

Static analysis result for SHA-256 6378bf3f9f595cd9…

MALICIOUS

PDF

47.4 KB Created: 2021-06-14 01:03:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c2bfd5692e644d4a749654e2cc8afed SHA-1: dc4566dbf00ff63598a5f84fcc7f570d96a59599 SHA-256: 6378bf3f9f595cd9be328d452e97f28141a1960ef48e1f6475896a91efdf1a07
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing attempt to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.co/app/431946152/free-robux-song-game-hack In PDF document text
    • http://magnipsor.su/images/www-rbxmaniac-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://magnipsor.su/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-robux-place_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/hack-para-roblox-2021-abril_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/code-free-robux_GM431946152.pdfIn PDF document text
    • http://magnipsor.su/images/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://magnipsor.su/images/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://magnipsor.su/images/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://magnipsor.su/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B1 26040 bytes
SHA-256: 972dea85033d9cd1422bf0ae3fd3af79af1e2b1e8657a052f080bf8c05d89706
font_01_sfnt_off000086a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A0 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_02_sfnt_off000096ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AD 18304 bytes
SHA-256: 70b92943034349370789929f105bedf1053ed4216897ad15904687a5dd8814ce

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