Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc8833647739315…

MALICIOUS

PDF

32.3 KB Created: 2021-07-20 00:02:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 516449cbd4e93097e2bb5a55e06a5ba6 SHA-1: 150e1b8e70f1722f0fd58584e167d6a7e3deefc2 SHA-256: ccc8833647739315df30fbc056ddba217ca5fe5286351f7232e50c39938ed0b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for "Free Tiktok Likes 2021" and "game hack" generators, directing users to a known malicious redirector. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious redirector chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/835599320/free-tiktok-likes-2021-game-hack In PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://barokahutama.co.id/ckfinder/userfiles/files/how-to-get-free-skins-in-minecraft_GM479516143.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002bd4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BD4 22232 bytes
SHA-256: e3a5c66e48a0daff3effb31ad7f9601fa281ab53d435ae9a41ffecf993d42b00
font_01_sfnt_off00005d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3B 17860 bytes
SHA-256: d258708121255352d461bbf2ed049085888c1bd8d2af1a740053385592fd2202

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