Malicious PDF — malware analysis report

Static analysis result for SHA-256 87e97d5869778738…

MALICIOUS

PDF

43.7 KB Created: 2021-05-12 02:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 074d9a16f1dcdad914e7d36ab042eb7d SHA-1: 0a0d8ec1515cfd6c41c990b21ce5617e0222cada SHA-256: 87e97d5869778738023e18e87eeadcba1cfc122fe6a78d94a0d5d3a535b616c3
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which appear to be SEO-optimized for game-related hacks and cheats. The primary URL, 'https://netcdn.xyz/app/431946152/free-draw-roblox-game-hack', suggests a lure for potentially malicious content. The ML classifier also flagged this PDF with high confidence, indicating a strong likelihood of malicious intent. The document likely serves as a distribution point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-draw-roblox-game-hack PDF link annotation
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/robux-gainer_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • https://elearning.man3kuningan.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://discordIn 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_off00004b8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B8E 26076 bytes
SHA-256: 665699f7aab4d26d50b3f9f85f130e34fd63137caab2537ed8f3e99646dad428
font_01_sfnt_off00008797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8797 18508 bytes
SHA-256: f910b5e05dc090141321478ad8f2371d3108a4bfaceab19230c4d52c6f4382ac

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