Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea64e70aca6e81e0…

MALICIOUS

PDF

52.4 KB Created: 2020-07-25 07:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3cb056e6f77cd466d876aad6a9005c30 SHA-1: d79c8bf9963cf1821fec097eb5d6d2d567e61a4c SHA-256: ea64e70aca6e81e00ed6e8c2fc854c899577f677396dd9f8b6376c70123ef0b8
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a high number of embedded links, many of which point to a redirector service. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to video downloads, suggesting a lure to entice clicks. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea of a deceptive call-to-action.

Heuristics 4

  • 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.
  • 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
  • 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://ttraff.ru/pify?keyword=vaste+full+video+song++3gp
    • http://files.fairlightfolk.com/uploads/1/3/2/6/132681587/eeb9a92f.pdf
    • http://files.citystarhotelyangon.com/uploads/1/3/1/3/131380485/veguni-nibivofajata-wosar-xuwetumogutej.pdf
    • http://files.mthermonministries.org/uploads/1/3/0/8/130813416/pewamevok.pdf
    • http://files.prettylittlethings02066.com/uploads/1/3/1/0/131070918/2075142.pdf
    • http://files.mthermonministries.org/uploads/1/3/0/8/130813416/pew
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/68859452801.pdf
    • https://cdn.shopify.com/s/files/1/0430/7084/9181/files/95201173504.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3069/files/18734788765.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/bozavukuzu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/pokovusepibarenazux.pdf
    • https://cdn.shopify.com/s/files/1/0432/7122/5494/files/jujubobo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/nadum.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/97457822495.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8436/files/91020847088.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/38378383749.pdf
    • https://cdn.shopify.com/s/files/1/0432/4045/6360/files/830252652.pdf
    • https://cdn.shopify.com/s/files/1/0441/1303/5416/files/zuxevovidofewenavutavus.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/lapifidar.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d89.bin
5f339192389f76568c8fe1ef1fb0ad5952667c39619bbead9d88c6ab352e3614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D89 5184 bytes
font_01_sfnt_off00006f4a.bin
6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 3720 bytes
font_02_sfnt_off00007aa2.bin
9cae3abe84eca5451f8005577bffdf3bba3944ae7f970841d19029bf170c7f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA2 7580 bytes
font_03_sfnt_off00008f38.bin
a20e4825b0a6b5f3686c3796bbe4516dadbb897c748df6eb5e9e04ddae6efde2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F38 10596 bytes
font_04_sfnt_off0000b341.bin
82a475d54f1ac4f4b79df4a2b0b07a3bb6a2820f1362e6a1cf6c66109ce6f229		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB341 4288 bytes

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