Malicious PDF — malware analysis report

Static analysis result for SHA-256 df8082bebeabf86c…

MALICIOUS

PDF

43.2 KB Created: 2021-05-15 14:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: edc480dcf6d5c6c9645ebe0f31436b90 SHA-1: 3b7133b778a469b6a56621593d1f08b41e16c59c SHA-256: df8082bebeabf86c18d78ef5bea318b7f977da986df7fe7028c0f95f48653468
200 Risk Score

Malware Insights

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

This PDF document employs a fake CAPTCHA lure to trick users into clicking a link, which is a common social engineering tactic. The primary link directs to a malicious redirector infrastructure known for distributing potentially unwanted or malicious content. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user interaction for redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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/406889139/pasos-para-hackear-coins-master-game-hack In PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/no-robux_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-for-ios_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://professionalpilottraining.com.au/images/how-can-u-get-free-robux_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
stream_003_off00004da3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DA3 25552 bytes
SHA-256: 903fe68040b09e5299c87d8a011fe78bfe2ce6c40721bedb8964175bd3c04fba
font_01_sfnt_off000087eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87EB 17868 bytes
SHA-256: 59162798968571b58eab4ea002b9aaa75bdfc5001cc9a37297d5f6ee37b3b3bc

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