Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d1ca9ca900d034…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 19:19:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5c23da4f8e8ac87336412f5868b8f833 SHA-1: c315b187f28b84be3de0ba103267a46a3037fa5b SHA-256: 30d1ca9ca900d0346e90a46498fd0292d273567daf71067bcf94529fa38298d2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lead to websites promising free in-game currency or hacks for popular games like Roblox and Coin Master. The heuristic firings indicate a link farm designed to attract users with these lures, and the ML classifier strongly suggests malicious intent. While no scripts were extracted, the document's structure and content point towards a phishing or scam campaign aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/games-on-roblox-with-free-boombox-game-hack PDF link annotation
    • http://pustaka.fti.unand.ac.id//repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/i-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-roblox-murder-15_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-any-roblox-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-surverys-for-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-how-to-use-cheat-engine-63_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-generator-that-really-works-that-works-right-away_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-roblox-accounts-2021-inspect-element_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-buy-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-roblox-using-nopde-engine-64_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-daily-free-spins-2021_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
font_00_sfnt_off00002f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7A 22548 bytes
SHA-256: 10ad27e06b549b5e79cd6622955d9f366740ac5e598d96450bfe7461c2b4d4af
font_01_sfnt_off000061c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 19496 bytes
SHA-256: 1add6b15097da4da7978ec9bffcc8953f7ea4f77dddb1de3a547b2637c4d2aee

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