Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b8ce95505daf2e…

MALICIOUS

PDF

45.4 KB Created: 2021-06-11 12:35:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 61bae2d9f1dbb67d612374fa4cb24775 SHA-1: 917d0889e277c9f7d226773c7f93ce246135c93d SHA-256: 00b8ce95505daf2e2c360d6ae712f500d918100b9b2c548740421ad220c3b361
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "game hacks" or "generators". The document body and embedded URLs strongly suggest a lure to trick users into visiting these malicious sites, likely for further malware delivery or phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-get-hacks-in-roblox-2021-game-hack In PDF document text
    • http://bit-sky.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/roblox-download-free-pc-windows-7_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-mode-menu-works-roblox_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/roblox-wanted-money-hack_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-codes-september-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005296.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5296 25140 bytes
SHA-256: e48813efb72aa13c370bfecaa21deb8d3241d04a0e302a7d86f56017e9b380ed
font_01_sfnt_off00008cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC2 18852 bytes
SHA-256: 4733233a7012a5ff70361472d467ac8b1154209072c50886d0baa45944ae85e9

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