Malicious PDF — malware analysis report

Static analysis result for SHA-256 208fd805a92a324c…

MALICIOUS

PDF

47.2 KB Created: 2020-07-29 19:25:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01144f945a40336f76a5597f1c96922f SHA-1: 60ee85076dc82f5646c7e85c75cee722744ca27f SHA-256: 208fd805a92a324c0f53531cec2e32ed910695f7e3136b1f084c6ff6ece4f3c1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Declaration trimestrielle urssaf auto entrepreneur pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=d%25C3%25A9claration+trimestrielle+urssaf+auto+entrepreneur+pdf
    • http://files.thereedsenglishlabradors.com/uploads/1/3/1/4/131438324/2800463.pdf
    • http://files.rivertonmiddleschool.com/uploads/1/3/2/3/132303024/303207.pdf
    • http://files.stickyinnovation.com/uploads/1/3/2/6/132695493/fofelasim.pdf
    • http://files.amymarinohomes.com/uploads/1/3/0/8/130814596/617ce4f7b7e09e5.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/37621634514.pdf
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/debapeliviloputiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/32780019284.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdf
    • https://cdn.shopify.com/s/files/1/0440/0775/1838/files/ritaviraturofavut.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/11243801219.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/3094551078.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/donalixot.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/64922462933.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/69553086991.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1183/files/zajonexuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/5258/9465/files/59754653311.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007665.bin
8414e16a95f8b2632e4c1531efa882bdcccd838add74c6415c96cc71359ddc9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 5324 bytes
font_01_sfnt_off00008822.bin
62d11e741a1a4b866dc4285dc682aa7a1ee9d000db4f5f2dc79af565c9c58ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8822 11504 bytes

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