Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea7323e540aaf20…

MALICIOUS

PDF

42.1 KB Created: 2021-05-11 17:32:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9f138095fb3d3bd0660a128c6007394b SHA-1: 077bbb6ad2e43ecf43a8761fddfa31d6b00c39f8 SHA-256: fea7323e540aaf207f07dec048460e025a3f6479a458ef8277c1672795948776
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting "free generators" and "game hacks". The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/406889139/free-spin-online-tool-coin-master-game-hack In PDF document text
    • http://schmittmusic.de/images/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/www-robux-com_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.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_off00004aac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAC 25004 bytes
SHA-256: baa5abc022be6f3ebf658350bcc641edda0068eac3443bbdf8d16e81e65939ea
font_01_sfnt_off00008365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8365 17960 bytes
SHA-256: ccd8a57ddc21ec57658e97dd2298d9591a9512a4c36f8c476c3f4a0a1231a43c

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