Malicious PDF — malware analysis report

Static analysis result for SHA-256 d337baaf08af95d9…

MALICIOUS

PDF

8.1 KB Created: 2021-06-29 02:22:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4d5586e52fdb936d911ef6796aa03049 SHA-1: dc44ac027b0495f5c5d681c1a0cd2c264497024f SHA-256: d337baaf08af95d940d3e1b69deb4ccdabd8a80cf5e8cfa7f26e0d821d7471fb
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including a critical redirector link to 'http://netcdn.co/app/431946152/free-roblox-accounts-2021-may-game-hack'. The document body and heuristics indicate a lure related to game hacks and free in-game currency, typical of phishing or scam operations. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9608

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/free-roblox-accounts-2021-may-game-hack In PDF document text
    • https://servotecnica.com/images/how-does-a-roblox-account-get-hacked_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/autou-clicker-cheat-for-jail-break-roblox_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/roblox-hack-pour-passer-a-travers-les-murs-2021_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/roblox-island-royale-hacks_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/pastebin-robux-free_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/hack-roblox-bee-swarm-simulator-apk_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/how-to-hack-prison-life-roblox-2021-free_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/free-roblox-cmds_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/free-robux-by-roblox-astebin_GM431946152.pdfIn macro / runtime command snippet
    • https://servotecnica.com/images/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://servotecnica.com/images/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/roblox-how-to-get-free-robux-promo-code-2021_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/roblox-money-cheat_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/game-guarfian-roblox-invisibilitt-hack_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://servotecnica.com/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://servotecnica.com/images/how-to-In macro / runtime command snippet

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