Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6ded95d23a7c6c…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 12:12:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a6a912153c855761c2ba2ce518dc15f0 SHA-1: 2b50505db85073556eea34f58bccda715129cec2 SHA-256: 0c6ded95d23a7c6ca07356306341788c039874970691328f9db912189a83d701
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The ML classifier strongly flagged this PDF as malicious, and the presence of a visual download button further supports a deceptive lure. The document's primary function appears to be directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/download-coin-master-free-spins-link-2021-today-game-hack In PDF document text
    • https://ifef.es/ckfinder/userfiles/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/hack-a-game_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/robuxfree-con_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-apk-hacked-3526_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/rbx-sites_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/roblox-no-download-hack_GM431946152.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_004_off00004da1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DA1 25680 bytes
SHA-256: d6a7af452e8a02d070ee2244318fa15b19fa491f0a3ff36e354d45a3d4845ca4
font_01_sfnt_off00008618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8618 19220 bytes
SHA-256: 525b4923e2ec08582fc0eec02dda3c6a08e890396aaafa489cf9c2f67061961a

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