Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b618ece76dd6276…

MALICIOUS

PDF

47.9 KB Created: 2021-05-18 02:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ae14c9f654bf0641bd6274a5b221e8a5 SHA-1: 4dd323b989b79e6da021839b40d1786ef60aa122 SHA-256: 6b618ece76dd6276cbe81869dc51565e361f61c2bdc677cb37c217d73fbfb099
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, which is a common lure for malicious content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_GAME_HACK_REDIRECT_LURE' indicate that these links lead to known malicious infrastructure. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-to-hack-roblox-jailbreak-game-hack In PDF document text
    • http://cacpglobal.ca/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://cacpglobal.ca/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://cacpglobal.ca/images/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/coin-master-how-to-get-japan-sushi-card-free_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_off00004908.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4908 25276 bytes
SHA-256: 2422618b9c65b746a8628388c87b8141f62018fff52e53d87559e1794033ecf5
font_01_sfnt_off00008385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8385 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00008d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D31 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off00009741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9741 18632 bytes
SHA-256: f85879c678901057cc908d94130b71f9fb6e8ee5be1c9db29d303049c5d159a2

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