Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9062dba929e3513…

MALICIOUS

PDF

49.4 KB Created: 2021-05-19 09:16:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ccf3c96a1d13c08271d0d446c9d2ad8a SHA-1: 7b60ac79cc08f5ff33b50bf56ad23b480392db01 SHA-256: b9062dba929e35134edb2cd956edc0542f547425e28b3a95083daf4296a6d1df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them by promising free game items or currency. The primary malicious link, https://netcdn.xyz/app/835599320/tiktok-free-music-library-game-hack, is identified as a known malicious redirector. The document's structure and embedded links suggest it is part of a phishing or scam campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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 https://netcdn.xyz/app/835599320/tiktok-free-music-library-game-hack In PDF document text
    • http://knjiznica-oroslavje.hr/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/robux-codes_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E7C 24488 bytes
SHA-256: 3123f482a54e30255ea1283e752e735b9ce2121dc4fbc3ee19c0a74c19af1e51
font_01_sfnt_off00008700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8700 3472 bytes
SHA-256: 3b25c806cbf22c279be678ab249c4fa9242250faf1d0b5a274cea4f3db81e20f
font_02_sfnt_off000092f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F5 3120 bytes
SHA-256: 49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
font_03_sfnt_off00009e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E08 18360 bytes
SHA-256: ddcfa629111290f8ccb1474b5145299eb2088860b088b63555ac05faeec3e8a3

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