Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd26bdf5e3917a62…

MALICIOUS

PDF

129.8 KB Created: 2020-08-01 03:25:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fbcc7512e142608b6381c943c758b89 SHA-1: 768b890d08224ee865ba5d609d429c495d955f0f SHA-256: fd26bdf5e3917a62aeee06a3c5aa1912168b917c998d9727394d3fd371846f54
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=chinese+id+generator'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=chinese+id+generator
    • http://files.ekstasisculture.org/uploads/1/3/2/7/132740515/2f6e26fe42041.pdf
    • http://files.hairandmakeupbykirsty.co.uk/uploads/1/3/1/3/131398473/kegusosa.pdf
    • http://files.streetdreamcreations.com/uploads/1/3/1/3/131383533/zaxolobegoz-zisinil-raluzimute-riferusalimizis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/mowejiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2336/7335/files/kekozadafozab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/26219114952.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/51960065675.pdf
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/gujoxaxasenutut.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/82287937146.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/nekozomanowuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/taromali.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/pujofozotimijasizek.pdf
    • https://cdn.shopify.com/s/files/1/0433/5996/1237/files/ligezuweludokuvek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lomapatigusobotatijizu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60868594071.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0001d44b.bin
7e451b6a2cfee7d2d1f631041cb4a1d043c60bd303ec4db54fb22daa50ea0c94		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D44B 21936 bytes
font_00_sfnt_off0001832c.bin
e7e72de0d4bc52d8c54257910160692098114100ae0ec20f8b047783126921ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1832C 4148 bytes
font_01_sfnt_off00019209.bin
5df576d203bb043e6d7ae18fd30d3a93ea60d9eb30f0bcc73d21df4f92b55f53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19209 4960 bytes
font_02_sfnt_off0001a2d9.bin
40013327227e7f7cc088d564e86a58a8c7f15d85df43ece04836f5109f2fabb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2D9 15980 bytes

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