Malicious PDF — malware analysis report

Static analysis result for SHA-256 db29f8dd08ea7840…

MALICIOUS

PDF

33.9 KB Created: 2021-07-02 02:37:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ed02d3cdc130238120677388cb338225 SHA-1: 0cb4d2707ef382eab528110492c4c8a694374a39 SHA-256: db29f8dd08ea7840ef1b8d40d9455718b3469bbb9f589fc3e0939fa5765b9f5c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains, masquerading as game hacks and cheats for popular games like Roblox and Coin Master. These links, such as 'http://netcdn.co/app/431946152/best-hacker-ever-roblox-game-hack', are designed to lure users into clicking and potentially downloading further malicious content or being directed to phishing sites. The presence of a visual download button heuristic further supports the deceptive nature of the document.

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/best-hacker-ever-roblox-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/comment-hacker-roblox-macbook-pro-franais_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/secret-skin-combination-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/adfly-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-shirts-to-upload_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-marshmello-shirt_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/da-hood-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hack-how-to-get-someones-password_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/como-tener-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-roblox-beta-one-piece-legendary_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-free-c_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_off00002f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F34 22052 bytes
SHA-256: ae4161b8a893b54585915db819afbffc204c0aac282bf57a27fa72fafa7c2a71
font_01_sfnt_off00005fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB7 18876 bytes
SHA-256: 2b7e4d57f5ea41849ec443fbb2df5aad334fe9d09428103f0ae5ed870f5804db

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