Malicious PDF — malware analysis report

Static analysis result for SHA-256 6caeba6349f41a1e…

MALICIOUS

PDF

38.2 KB Created: 2021-07-01 19:21:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 72612fa62220886926f8d9b178fbc362 SHA-1: eebe6632490a6ef934a2bd813239cedbd197f5f9 SHA-256: 6caeba6349f41a1e0dbce31b678fc415d8ed67a8bae31b820a4778065af59842
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-club-free-robux-game-hack PDF link annotation
    • http://202.56.165.220/digilab/repository/1-million-free-robux_GM431946152.pdfPDF link annotation
    • http://202.56.165.220/digilab/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-assassin-cheat-codes_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/hacks-for-area-27-roblox_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-hack-robux-2021-in-1-min_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/boku-no-roblox-accounts-free_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-level-7-exploit-free_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-robux-for-free-no-generator_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/telecharger-roblox-booga-booga-hack-le-meilleur_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-robux-5-ways_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-robux-no-joke-2021_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/minecraft-pe-apk-free-download_GM479516143.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_off00003dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DD2 22828 bytes
SHA-256: b990ca0da011ed46c1dd38e0b1c54ca4d552c6b0915cfd6a90ab28150f4a31bb
font_01_sfnt_off0000714a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714A 18788 bytes
SHA-256: 1ffc506a8a4875b2c10c23990029dae9381836bc6ba97d1295fbeee48120f2cb

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