Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a61d7a348437829…

MALICIOUS

PDF

47.2 KB Created: 2021-06-11 07:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b567e2e6a824b7d0ca3e52bc59a4ef4f SHA-1: 11a6660d18f3ed883d113fc1c4baec4ae17f20b4 SHA-256: 5a61d7a34843782926e463d53279ab55ca2743a03ef5cd7a00100f19495620c5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains embedded URLs that lead to game hack lures, specifically mentioning Roblox and other popular games. The primary malicious URL identified is https://netcdn.tw/app/431946152/roblox-tuto-hack-game-hack, which likely serves as a redirector to a malicious payload or phishing page. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to trick users into downloading or accessing malicious content, aligning with a spearphishing attachment tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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 https://netcdn.tw/app/431946152/roblox-tuto-hack-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/roblox-hacks-phantom-forces-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-para-tener-robux-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/get-robux-for-free-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/anime-tycoon-hack-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-i-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-sell-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-engine-for-roblox-64_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-links-2021_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51AC 24888 bytes
SHA-256: 2a24bc6be21ecd4d554518ddc5ee11d20e2fbd3973ab89d7448c00df193dd345
font_01_sfnt_off00008b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B04 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00009500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9500 18428 bytes
SHA-256: c2bfd7f3a8d361c09ac9b4e8d289a0e7d1b63e4245efbdec908e298b3ac1cd5e

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