Malicious PDF — malware analysis report

Static analysis result for SHA-256 8314d0a8a6d21dc6…

MALICIOUS

PDF

32.8 KB Created: 2021-07-03 23:14:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d9ec4cf2db3e176e2c928a973f80c7c8 SHA-1: f7169b8441c0e87c986445591735318903000fa7 SHA-256: 8314d0a8a6d21dc614e337a5dab177dfdee1b08df661dd5913e292ca1d9d17a8
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game hacks and currency. The primary redirector URL is http://netcdn.tw/app/479516143/minecraft-svg-free-game-hack, which leads to further malicious PDFs hosted on charivne.info. This indicates a phishing or scam campaign designed to lead users to potentially harmful content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.tw/app/479516143/minecraft-svg-free-game-hack In PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/roblox-free-website_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-robux-ezpoints-gg_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/roblox-party-printables-free_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/cheating-on-roblox-girlfriend_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/village-coin_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/roblox-hack-robux-2021-apk_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/food-empire-roblox-hack_GM431946152.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://charivne.info/ckfinder/userfiles/files/free-robux-without-verification_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_off00002ec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC9 21828 bytes
SHA-256: b78ea3225ea30b73807ba96ff4006e97ac16fa03b801c2e432a01448b118d80c
font_01_sfnt_off00005e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8E 17968 bytes
SHA-256: f82c060a5662ddcca675aec0cfac04b32032cde6baf3a8524f802f6fcb7e6d40

Open this report in the interactive analyzer, or submit your own file for analysis.