Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f76745c37dfeaad…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 14:01:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: e59026d8933ece8a194fafd1ce0e2ac7 SHA-1: f1b26db7eb81769f9e00b2478fe14e1de424c9d5 SHA-256: 2f76745c37dfeaad5b8f13058f10616b75c24b702691ef97cb3a317945ce07a2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, including a known malicious redirector, that promise game hacks and free currency. These links are designed to entice users to download further content, likely malicious payloads. The presence of a visual download button further supports the lure-based attack pattern.

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.
  • 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
  • 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-cheat-engine-lua-table-scripts-2021-game-hack In PDF document text
    • http://202.56.165.220/digilab/repository/roblox-gift-card-codes-free-unused_GM431946152.pdfPDF link annotation
    • http://202.56.165.220/digilab/repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/boxing-simulator-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-money-cheat-ipad_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-download-roblox-on-computer-for-free_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-hack-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-no-human-verification-no-download_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-cute-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-generator-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-hack-no-survey-no-password-no-virus_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/cheats-for-roblox-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/robux-gift-cards-free-codes_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_off00002dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFD 22408 bytes
SHA-256: 341029c964e2c5e7955a631bb1db490cfb7639ac13f990cd04c28b1af3135339
font_01_sfnt_off0000601c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601C 19592 bytes
SHA-256: da24eb85420dd5174075a74a038012c98f5b9356ca5df65689fa3d260c013edf

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