Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66d3ae298c537db…

MALICIOUS

PDF

34.5 KB Created: 2021-06-25 18:14:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e182342f50657847a0a80bc57ac16a95 SHA-1: 1cc06aef1b220cd3f5db5bc9efb259c836ad755f SHA-256: d66d3ae298c537db0e18e8f44634b9d9b13e1cb0d7efaad411839c5113c83f4a
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to websites that are either known malicious redirectors or host further PDF lures related to game hacks and free currency. The document body explicitly mentions 'Roblox Name That Famous Character Cheats' and includes URLs that reinforce this theme. The presence of a raw IP address in one of the URIs and the ML classifier's high confidence score indicate malicious intent. No scripts were extracted, but the document's structure and embedded URLs strongly suggest it is part of a phishing or scam campaign.

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-name-that-famous-character-cheats-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/hack-slash-roblox-id_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-download-a-roblox-jail-break-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-infinite-robux-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/can-u-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/cheats-and-codes-for-snow-shoveling-simulator-roblox-pc_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-co-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-account-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/cydia-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/admin-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/visea-descargar-hack-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-do-i-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-emotes-free-link_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-robux-hack-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-with-lucky-patcher-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-and-coins-daily_GM406889139.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_off00002fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE6 22236 bytes
SHA-256: 9d63be6feefdac4f404d2294ea83b51cb2a44c4784c350f18ced5651cb58e75b
font_01_sfnt_off00006131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 19320 bytes
SHA-256: c6b5e431fb5c3f951f980866766d51d0571f98571bb3c1ca54974191678e47fd

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