Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c38bb3eb0cee40f…

MALICIOUS

PDF

45.8 KB Created: 2021-06-07 18:07:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b230d8d6d174d59d538a97e87f7b1fec SHA-1: 2d08b481bb9d7511d3869b9dc15f73ab06f2ed00 SHA-256: 6c38bb3eb0cee40f6bbed397191b43234ecf91d66357ee4a6ef3aa99d9af8c69
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/rroblox-robux-hack-2021-game-hack PDF link annotation
    • http://safwafurniture.com/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/free-games-online-on-robloxcom_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-robux-python-2021_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-free-spins-link-blogspot-today_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
stream_004_off000052fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52FE 26144 bytes
SHA-256: 339961183695329f4e635a4206b2ff7a0c1381c0bb4809ac190186db7ff6a204
font_01_sfnt_off00008eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EEF 18724 bytes
SHA-256: c40aa1dd7620a91a53c95313a8bb41fa7e7bf80939176581a794b53a545c3d74

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