Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b40da0ac473bf5f…

MALICIOUS

PDF

33.7 KB Created: 2021-06-21 10:49:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: dcc08cbbc7b11686dfecc3bc8f3d2306 SHA-1: 2de3a32babe9c8262f0ff1e8aeecc0b3ef352835 SHA-256: 4b40da0ac473bf5fd7e15150369630a09c08dfcc441a6aacd242e24d0a74b270
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to websites offering game hacks and generators, indicating a lure for users interested in such content. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of these links are present, likely to drive traffic to malicious or scam sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/popular-roblox-games-for-free-game-hack PDF link annotation
    • http://parsbaft.com/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-bubble-gum-simulator-hack-script-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-free-ps3-download_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/hack-pour-obtenir-robux-gratuitement_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-hack-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/https-enhelprobloxcom-hc-enus-articles-202120210myaccountwashacked_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-get-promo-codes-robux-free_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/hacks-para-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-hack-other-players_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-jailbreak-best-teleport-hack_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-real_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_off00002d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D96 21880 bytes
SHA-256: 77440b641ec100e4fa42556396fab8e1b925411dee2e9d19e3743dd7d7c3408c
font_01_sfnt_off00005dd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD8 19380 bytes
SHA-256: 6b7036851e4dd4402ccb6eb9d075348df2e38f226f6dfb1b4a0b2d593e6115a0

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