Malicious PDF — malware analysis report

Static analysis result for SHA-256 90348545fb5f0b2f…

MALICIOUS

PDF

48.7 KB Created: 2021-06-11 11:16:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0fc88739a52d252d97de09a9de49adc1 SHA-1: 9efb791253a6867155bbe6ec33ebb686b627d29d SHA-256: 90348545fb5f0b2f3ca7a8bc4803d49ae14d3377f2c4833608d052685ad2cbfa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, specifically mentioning 'Roblox Adopt Me Hack'. It contains multiple embedded URLs pointing to websites that likely host malicious content or further redirects. The primary malicious URL identified is https://netcdn.tw/app/431946152/roblox-adopt-me-hack-mascotas-game-hack, which is likely used to deliver a second-stage payload or phish for credentials. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-adopt-me-hack-mascotas-game-hack PDF link annotation
    • http://katalog.gemalibrary.net/repository/create-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-in-roblox-jailbreak-speed_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-website_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-meep-city-money-cheats_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-online-hack-download_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51AF 27036 bytes
SHA-256: cedbd7fa2e18a4f65f4d25791c61ab20bef3b2f234ddd6eaf46d6ee554d9aa6d
font_01_sfnt_off00008ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFE 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000099ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AD 18832 bytes
SHA-256: 9a873fbe170ab831d7d0a5af44f4cbc0f22fa527b52d764e693da8eaa811c4f5

Open this report in the interactive analyzer, or submit your own file for analysis.