Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db6382dec9b5069…

MALICIOUS

PDF

51.1 KB Created: 2021-05-14 01:16:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8e9c8692ae12bc20974d515ca8884b2c SHA-1: 518dd748a39fb13a610efebaaf06f8b6261e87f3 SHA-256: 0db6382dec9b506996dcef9cf759191dc14e0aa2e330aed7c89509e4e7a47332
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are related to obtaining free in-game items or currency for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a link farm designed to attract traffic or lead users to potentially malicious sites. The presence of a 'download button' lure further supports the idea that the document is intended to trick users into clicking these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8646

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/431946152/ways-to-get-free-robux-2021-game-hack
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-promo-code-2021_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/how-to-get-free-faces-on-roblox_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/tower-of-hell-roblox-hack_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-com-free_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-hack-download-pc_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/roblox-trolling_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-coins-coin-master-blog_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-free-spin-reward-links_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-hack-app_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/minecraft-pc-download-free-full-version_GM479516143.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-today_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/my-roblox-account-was-hacked_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-latest-mod-apk-free-download_GM406889139.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
    • https://elearning.mtsnegeri1pohuwato.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b44.bin
7bc227a259e5688290b1da003d44bfba457bceb20583fcd6874c0df8cdb3902d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B44 27164 bytes
font_01_sfnt_off0000894e.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x894E 3884 bytes
font_02_sfnt_off000095f1.bin
9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95F1 5596 bytes
font_03_sfnt_off0000a299.bin
23f4c6d0bfdce0b55b29b4c4e1f8fc5f357783b93db13de52c4fadcc57c1eadd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA299 19128 bytes

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