Malicious PDF — malware analysis report

Static analysis result for SHA-256 883a368de08651b9…

MALICIOUS

PDF

46.5 KB Created: 2021-04-29 20:12:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 69aa014a6be53398e42edc21d4a779dc SHA-1: 9b646e46574bb3b4cac53b0e7db97421840041b1 SHA-256: 883a368de08651b918917bfb2df9a409d5a0acd75c412486ae1d314151a17503
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector, which is designed to lure users into clicking on game-related "hack" or "free code" content. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely aiming to steal credentials or deliver further malware. No scripts were extracted, but the presence of malicious redirector links and the lure content are sufficient indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9753

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/free-robux-gift-card-codes-2021-unused-game-hack In PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-roblox-vip-sever.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/como-hackear-cualquier-cuenta-de-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/promocodes-roblox-free.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/xbox-hack-to-play-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-t-oget-ant-free-robux-item.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-access-the-studio-of-a-roblox-game-hack.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-do-u-hack-into-bases-on-sharpshooter-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/fairy-world-roblox-hack-pastebin.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-x-ray-hack-autohotkey.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-hack-without-human-verification-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000042f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42F9 28916 bytes
SHA-256: 8f051eabe2c2e50d68dcec60847a9a63b66d01ff6973fceda7e33cc8a024ae6a
font_01_sfnt_off0000844c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844C 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000090f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F3 19228 bytes
SHA-256: 0b8cf792dbb48f36a63467346353b6cefc8219b216f57bca44070a21ecf6bd97

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