Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb78e123f4db51c4…

MALICIOUS

PDF

41.1 KB Created: 2021-05-19 10:51:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 875c3968dc05525bde525b2ac0c9ed1f SHA-1: 3c7ad21c218449cb84fd094694c577e2f4ae0bd7 SHA-256: eb78e123f4db51c4ec6363a9c88980a463c6b41285ac1b2a4f59f9fd2f34861e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external links, with a primary URL pointing to a 'pokemon-go-free-85-game-hack'. This lure, combined with the ML classifier's high confidence and the presence of numerous other links to game hack sites, strongly suggests a phishing or scam campaign. The document's structure and embedded links indicate it's designed to redirect users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/1094591345/pokemon-go-free-85-game-hack PDF link annotation
    • https://audev.com/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://audev.com/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://audev.com/images/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://audev.com/images/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://audev.com/images/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-place_GM431946152.pdfIn PDF document text
    • https://audev.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-free-spins-reddit_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_003_off000047be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BE 24168 bytes
SHA-256: a2e41dd47a6736545bbc7f06bb4c97912ea48b88b79742df78cd03fd9d99b60f
font_01_sfnt_off00007e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9F 18188 bytes
SHA-256: a13c8a51e7004c1075e1f771358a7363897191c9cb550039ba246438347f7b44

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