Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4cf727bb28b0c7…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 17:27:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: f05d40dc70c04a30d1fbbc445c9d7363 SHA-1: 2c8afada8acc21c4979df613da66051dcbd46faa SHA-256: 0d4cf727bb28b0c7bfccc3ffc765e14296409baa79bf5459122f25452f2c4fa6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to 'http://netcdn.co/app/431946152/free-dominus-roblox-game-hack'. This lure is designed to trick users into believing they are accessing a game hack or generator. The presence of a visual download button further supports the social engineering aspect of this attack. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to potentially harmful infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-dominus-roblox-game-hack In PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-how-to-hack-infinity-rpg_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-pet-snacks-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-youtube-denis_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/robux-recharge-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-hack-website-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-btools-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-robux-from-account-birthday_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-no-buying-anything_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/cheat-code-bubble-gum-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-robux-codes-no-survey-2021-october_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-roblox-jailbreak-money-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/free-roblox-pro-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://perpustakaan.dutadharma.ac.id/repository/roblox-mon-compte-il-fait-hacker_GM431946152.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
font_00_sfnt_off00003030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3030 22016 bytes
SHA-256: c3b6b2a6b32092e1c5b75ecbf4d6389a4cc2c37ca3cbca43077f06bfaef0bf4f
font_01_sfnt_off000060f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F0 19340 bytes
SHA-256: 781bfc388907dc65260be8c95cc2de7d0d53b52d4e0ea4dde7ebc85e12530e77

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