Malicious PDF — malware analysis report

Static analysis result for SHA-256 085eaa0720ae83f4…

MALICIOUS

PDF

42.8 KB Created: 2021-05-16 18:22:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 775c443e3e701ef1e86b6331ae4c6e53 SHA-1: 0f7f154a10d70b8edc3463b93926c1f565d4b081 SHA-256: 085eaa0720ae83f4ec0c38babe67294d31f4b2269462448976db76fd1c85b84d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free currency. The presence of a visual download button and the overall structure strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/479516143/how-can-you-get-minecraft-for-free-game-hack In PDF document text
    • http://killebergsridsport.se/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://killebergsridsport.se/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://killebergsridsport.se/images/minecraft-java-edition-for-free_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
stream_003_off00004bf0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BF0 25432 bytes
SHA-256: fb6b291cd1009489cc6fa104204c1647c03966518c71fcdf639226c7d1320de0
font_01_sfnt_off0000855a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855A 18176 bytes
SHA-256: 496991d5a760fd596b7ce23c6639e8b030b747c8e4be97118aa62bfd0f632ec2

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