Malicious PDF — malware analysis report

Static analysis result for SHA-256 24aff2d18eb7cd7d…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 18:50:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4ed96fc694ef35c466421a6500b40a12 SHA-1: f9763714eee68ea6da985a2db1eadf0827012c9a SHA-256: 24aff2d18eb7cd7de1c7a8537af82833214a9987568b8c91d3fb17e9fabc1112
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to websites offering game hacks and free currency, with one direct link to a known malicious redirector. The document body and heuristics indicate a lure for users interested in games like Minecraft and Roblox, aiming to redirect them to potentially malicious content or downloads. No scripts were extracted, but the embedded URLs and the nature of the lures strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/minecraft-server-free-trial-game-hack In PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/power-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/mod-pack-for-free-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/roblox-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/speed-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/software-for-cheat-engin-66-to-not-make-roblox-carsh_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/nre-roblox-adopt-me-hack-script-money-glitch-tizi-artizi_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-roblox-from-gor-rs_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/cheat-engine-how-to-destroy-a-roblox-server_GM431946152.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/202100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.virajafashionista.com/uploaded_files/userfiles/files/robux-hack-no-human-verification_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_off000033fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FD 21932 bytes
SHA-256: 613b4ff3f570427fbe37986b089ed8cda403cec32130b3641ff7bfc1c2626c3e
font_01_sfnt_off0000646c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646C 18044 bytes
SHA-256: 5a296e18dbf65f04870817c9dd6793c8643020e9f41ce66c5e33f12cc84b0da1