Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e2fcefd1fc6ab8…

MALICIOUS

PDF

46.0 KB Created: 2021-05-16 05:13:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e9c044044c163dbbd4fbb929ec33b280 SHA-1: a060e22a07bd5daf6010e6a76e714b8cb5fd966f SHA-256: 44e2fcefd1fc6ab8f83378d4297d28eec53cb9fb367568a8b9ef0c946ceb4075
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on offers for game hacks and currency. These links redirect to malicious infrastructure, specifically the URL https://netcdn.xyz/app/431946152/redeem-roblox-card-free-game-hack, which is flagged as a known malicious redirector. The document body and embedded links suggest a phishing or scam attempt leveraging popular game themes to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/431946152/redeem-roblox-card-free-game-hack In PDF document text
    • http://www.compusiteinc.com/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/cone-master_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/robux-page_GM431946152.pdfIn PDF document text
    • http://www.compusiteinc.com/images/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.compusiteinc.com/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4739 27260 bytes
SHA-256: ada01f0f6a6406c0ca1cd8a903c196ddd214c0e720edc383246ff3ce50102b73
font_01_sfnt_off00008672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8672 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00009023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9023 18612 bytes
SHA-256: 60f5a1d5a0775e45587e850c673dfad554e932795a56f36892a7298ffe0bc887