Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f42359bc9a684fb…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 05:55:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: db3fe4fafa5c41987a70a29e2e0fcd81 SHA-1: c02b9465acce84d5f33fd66d2664a0f03565d00e SHA-256: 4f42359bc9a684fb41456dc03b5f5161c2b46e3d5b7c3f0bb9ff689420bfab0c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.9980

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 http://netcdn.co/app/431946152/roblox-hack-apk-mod-menu-game-hack PDF link annotation
    • http://safwafurniture.com/images/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/hack-roblox-pc-robux_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/pokemon-go-free-accounts-level-40_GM1094591345.pdfIn PDF document text
    • http://safwafurniture.com/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/getfree-robux-eus_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://safwafurniture.com/images/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://safwafurniture.com/images/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://safwafurniture.com/images/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://safwafurniture.com/images/robuxfree-con_GM431946152.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_off0000302e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302E 22128 bytes
SHA-256: b1a55bf19c47ac4c313151ff1dc182ca9873f406d8b1a86882b03670e7f6a352
font_01_sfnt_off0000613b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613B 19156 bytes
SHA-256: b9c8e986ae9a0ec18fbc83a9d53bc0daac3e0c26511cf31523efb2bef078b44b

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