Malicious PDF — malware analysis report

Static analysis result for SHA-256 395068f239bad071…

MALICIOUS

PDF

45.1 KB Created: 2021-06-02 06:43:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ae0ac6f6de0dfa88afa8f6c3b80cd72e SHA-1: cde329db11a7f79f87c65383d13aa416db10a0ee SHA-256: 395068f239bad07118769e4d25131db1ac51582586f4af9f5751caf51e37abd1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to external websites, many of which are structured as SEO-optimized PDF gateways for topics like free followers and game currency. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of such links, suggesting a link farm or content-scraping operation. While no scripts were explicitly extracted, the presence of embedded URIs and the ML classification strongly suggest malicious intent, likely to redirect users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-free-tiktok-followers-without-human-verification-game-hack PDF link annotation
    • http://internetdeputy.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • http://internetdeputy.com/images/download-hacked-games-coin-master_GM406889139.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_off00004c7c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7C 28560 bytes
SHA-256: ac10871573058d4db005ec923c3a7b20218039d5389a855fdad75a33f7eea7a1
font_01_sfnt_off00008c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6E 18820 bytes
SHA-256: 79c2bf02bc82707ab9f25b25786afb4a3e11e0d45a314ed7c066e7684dd6d9fe

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