Malicious PDF — malware analysis report

Static analysis result for SHA-256 de67e27462d5b84b…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 19:39:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 91414188474dec32e4bfb45e0839b747 SHA-1: caa8dfcc4dc621b0737645ab088157ca3afbecb7 SHA-256: de67e27462d5b84bad1fd859bcf0a94ea3ce291dd7d754e9142650698704b854
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, likely intended to lure users into downloading further malware or visiting phishing sites. The document body and embedded URLs explicitly mention game-related cheats and free items, a common social engineering tactic. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/431946152/free-t-shirt-roblox-game-hack In PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-codes-9-3-19_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-games-in-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-with-consol_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-hack-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/is-it-possible-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/confiscation-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-no-verification-on-computer_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-project-lazarus-zombies-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-robloxian-20-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-ro-ghoul-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hack-roblox-cheat-engine-63_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-do-you-get-free-robux-hack_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_off00002f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6E 22460 bytes
SHA-256: be887a70593b1b7a8acec88c58835d844f60626650ee8ff0390fcff4018c9594
font_01_sfnt_off0000619f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619F 19040 bytes
SHA-256: 4c6f10868613b8378681dbc884c11a56d68fee5027f14534ed7133995e7373e4

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