Malicious PDF — malware analysis report

Static analysis result for SHA-256 38eb7642b8b680ae…

MALICIOUS

PDF

40.5 KB Created: 2021-05-19 06:35:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 3a68bba2ee743f3cfc9eb78b6ac71fc8 SHA-1: 0fcc873dc421b9a4641ada335b92febf3a750ade SHA-256: 38eb7642b8b680ae3754e3d1175aa0be91a2e31fa27d055e551e8eae1517313a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on them, disguised as "free generators" or "game hacks." The primary malicious redirector URL is https://netcdn.xyz/app/835599320/tiktok-free-credit-game-hack, which is flagged as malicious. The document body and embedded links suggest a social engineering tactic to drive traffic to potentially harmful sites, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/835599320/tiktok-free-credit-game-hack In PDF document text
    • https://www.ma-plast.hr/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-villages_GM406889139.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
stream_003_off00004623.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4623 24728 bytes
SHA-256: 76ad26ae3d66f3a25f610d6fde657b5162722d77eb7fe850e457da1dee5c836f
font_01_sfnt_off00007de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE9 17632 bytes
SHA-256: e8402b73655820a54a49c63c105445728f06825ec2ce5a2badb94829941b2313

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