Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd0ef2b9d956f7a…

MALICIOUS

PDF

43.6 KB Created: 2021-05-03 04:09:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4530eda706baaf3146e56e7a9f19b91b SHA-1: 64b8777985ada9d3abb7bdfa2b4cce588a0f00ef SHA-256: bdd0ef2b9d956f7a8952b429e5d7497fd011e28bd41259571bf4929598440cd0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link and call-to-action text related to Roblox game hacks and generators, identified by the 'PDF_GAME_HACK_REDIRECT_LURE' heuristic. The document body and extracted URLs reinforce this theme, pointing to various "free Robux" and "game hack" related pages. While no scripts were extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to a phishing or scam page designed to trick users into providing information or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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.xyz/app/431946152/change-name-on-roblox-for-free-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/free-robux-without-doing-anything.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-bc-codes.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/new-hack-for-roblox-2021-november.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-do-you-get-free-robux-easy-way.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-ez-hacks-for-roblox-robucks.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/best-meliodas-roblox-face-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/script-create-platforms-under-the-character-roblox-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-free-robux-giveaway-live.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-how-to-get-free-pp-in-plaza.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/generator-free-account-old-roblox.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_003_off000040b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40B9 25956 bytes
SHA-256: 5c7fba48a21d8e709b0dbf6b366661897bd232fb6505eb92d9b46fdbdca42252
font_01_sfnt_off00007cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD9 2848 bytes
SHA-256: 4737c2778a085e0cb49e73f3b054b1a71e3f40720d213b4bfda97f95a31bfbf1
font_02_sfnt_off0000869b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869B 18888 bytes
SHA-256: 6ce5230f262864a69033fca4b71c33766edc1086aa5453a980d51eac2b47867d

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