Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01f1556625708f7…

MALICIOUS

PDF

34.5 KB Created: 2021-06-24 22:27:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: fe84bc499c1a20aee151461486d11f2a SHA-1: d29a4d889433d057e17de009b5dee0aad0e370a4 SHA-256: e01f1556625708f76994e73181d6e6213a012798b74f1dc5364b236a2b0605d6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains that host further malicious PDFs, often disguised as game hacks or generators. The primary lure appears to be 'Como Hackear Cuentas De Roblox' (How to Hack Roblox Accounts), directing users to http://netcdn.co/app/431946152/como-hackear-cuentas-de-roblox-game-hack. This indicates a phishing or scam campaign designed to trick users into visiting malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.co/app/431946152/como-hackear-cuentas-de-roblox-game-hack In PDF document text
    • http://razredna-nastava.net/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-no-human-verification-2021-or-survey-generator_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-robux-hack-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/unlimited-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-free-download-mac_GM479516143.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_off00002f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5C 22400 bytes
SHA-256: 4d08d98a10ebd5b4fbde5f66c36f8603ecfc2d592051cd2f8303f1fe430f6fbb
font_01_sfnt_off00006107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6107 19328 bytes
SHA-256: feb2726f7a9b0870a5edbc4e77d6180dd344774539c7257ebc1b695b3416528f

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