Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f5bb3db663a7629…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 14:13:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5273b23d6d8460fb6d334b092ce395e9 SHA-1: 1181db8e005e24399dd7f64d0cb97504920f9a32 SHA-256: 6f5bb3db663a76291cfb5c01298451595c2260007ea15776bfd7e1de4069397e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically luring users with promises of game hacks and script executors. The embedded URL leads to known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/free-script-executor-roblox-game-hack In PDF document text
    • https://ccej.lviv.ua/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/robux-hack_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/robux-com-free_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-robux-real_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ccej.lviv.ua/images/coin-master-hack-online-generator_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
stream_003_off00004b3e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3E 24108 bytes
SHA-256: bb418a4d08b2a82b5c8f8d83cc2137c3f2c3f2a88b357b712045b30eb430f2a1
font_01_sfnt_off00008202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8202 18488 bytes
SHA-256: c1d8906df7cfed201442eecb2c05ff4a638972dd76746327367067a9273c3e32

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