Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd8062ed2ea7d7d…

MALICIOUS

PDF

33.4 KB Created: 2021-06-19 04:11:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 92aeda3d13c1e8b4586ad6acc3c3c86e SHA-1: 21b7c5cb101f3f7691c082a397bd19055b27f686 SHA-256: 6cd8062ed2ea7d7d67bcf395bd0ead4d63c993e7dca02ebc5fd8b8a608e0446c
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple lures for free game currency and hacks, directing users to malicious URLs. The ML classifier strongly indicated maliciousness, and the presence of redirector links and IP literals confirms a malicious intent to lead users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs suggest a phishing or scam attempt.

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/free-roblox-video-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/hack-roman-aegyptus-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/pubg-uc-telegram_GM1330123889.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hack-roblox-pc-download-scripts-no-noclip_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-roblox-money-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-hack-real-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/spiele-hacken-pc-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-robux_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_off00002ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDB 21704 bytes
SHA-256: cf02b4da44b86352c718306669097b90d13215b4cff8e20e4441c78cb494c73d
font_01_sfnt_off00005d80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D80 19076 bytes
SHA-256: 5e020e3dcf31ae7d8218f7db90aee24aab718a3cae03c885dbf3e16baef00e81

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