Malicious PDF — malware analysis report

Static analysis result for SHA-256 667bd54ed2dd625c…

MALICIOUS

PDF

53.3 KB Created: 2021-05-17 04:30:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: bb60005f1a78ce802d75444e846c088c SHA-1: 32e07845a09031ff0a9f1bc2395e8ca2d82d4f3a SHA-256: 667bd54ed2dd625c2769f486148ab95a3fd32acd7b914427649121c18eaac59f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The embedded URLs, such as 'https://netcdn.xyz/app/431946152/www-free-robux-game-hack', are designed to lead users to potentially harmful content or further malicious downloads. The presence of a download button lure reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9231

Heuristics 4

  • 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.
  • 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 https://netcdn.xyz/app/431946152/www-free-robux-game-hack In PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/strucid-aimbot_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/more-robux_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://terapivitalitasjogja.com/ckfinder/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AEA 26276 bytes
SHA-256: 93cf352b9eeb428a55d4f21540b9f2f39b255c27de1853a5b359333f0e7ccc8b
font_01_sfnt_off0000862a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x862A 12848 bytes
SHA-256: 0606d44aaa7ca31024fbb3f947c31552ed69f740b505ba806cec7de6bdfe2ce5
font_02_sfnt_off0000ae36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE36 18376 bytes
SHA-256: 3afa3067d1f3c9d8d4e5028784d7d2a7352a3b977a914758f486701e4d265e0a

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