Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c33e19a8c98e99f…

MALICIOUS

PDF

8.1 KB Created: 2021-07-03 12:04:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 109400a486a822ec626865a74fed01da SHA-1: d6a250755dcf148e7981fc84f31600cec246a4dc SHA-256: 4c33e19a8c98e99f9de63ed85fe3d9f8251fa88d8c68389f81677fea254e400d
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, indicating a lure for potentially malicious downloads or scams. One critical heuristic identified a link to known malicious redirector infrastructure, and another pointed to an IP address directly. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9768

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/freespincoin-masterlinkdownload-game-hack In PDF document text
    • http://202.56.165.220/digilab/repository/best-roblox-hack-website_GM431946152.pdfPDF link annotation
    • http://202.56.165.220/digilab/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-hack-2021-december_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-money-on-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-hack-any-verification_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-google-play-free-things_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-hacker-1x1x1x1_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/hacks-for-robux-2021-computer_GM431946152.pdfIn PDF document text