Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af5c8a4d5265d46…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 20:11:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3be66bab559ee3f689391e16381aeba7 SHA-1: 01584ca46b8d73a6f61dde07c92f5f3fbfacbca5 SHA-256: 2af5c8a4d5265d46d81810a07cc8a7670a290fd368fa184550bb7778cd366aae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links that point to known malicious redirector infrastructure and sites offering game hacks and free in-game currency. These links are designed to lure users to potentially malicious websites, which could lead to further malware downloads or phishing attempts. The ML classifier also strongly indicated maliciousness.

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.tw/app/479516143/how-to-get-hacks-on-minecraft-game-hack In PDF document text
    • http://projectunionstreet.com/library/repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/juego-de-roblox-hecho-por-un-hacker_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-put-in-cheat-codes-on-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-and-builderclub_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-instant-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/robux-generatr-hack-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/pokemon-go-free-trade-evolve_GM1094591345.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-hack-roblox-for-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-roblox-noclip-hacks_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_off00003237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3237 22516 bytes
SHA-256: 29bd32666844219b36e8a24601ddc6ae8bdf1c7efaaaabe90a5f5cee192ca9e6
font_01_sfnt_off00006487.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6487 18332 bytes
SHA-256: 7074210b4cd1020dcfe52daa4947dc8d4893434919d69b6619189279454e1a4d

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