Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaed9301529d5ca4…

MALICIOUS

PDF

47.3 KB Created: 2020-09-07 22:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac118c33b42e9299d5ac3b601ecc4e11 SHA-1: e9a271a9e8128356c38edf86e954d75f0818efd1 SHA-256: eaed9301529d5ca4386a39b3080162df6d8c69050f426a4bf3531bc1b2eaf357
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.link/wix?keyword=excel+expense+spreadsheets', which is designed to lure users into clicking it. The document body, though heavily obfuscated, contains references to 'Excel expense spreadsheets' and the URL itself, reinforcing the phishing pretext. The presence of a link farm heuristic indicates a broader attempt to distribute malicious content. No scripts were extracted from this sample.

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.link/wix?keyword=excel+expense+spreadsheets
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/11758629921.pdf
    • https://cdn.shopify.com/s/files/1/0436/1368/3874/files/peter_atkins_principios_de_quimica.pdf
    • https://cdn.shopify.com/s/files/1/0463/1874/7810/files/vujipedebonemo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/pixodonetuju.pdf
    • https://cdn.shopify.com/s/files/1/0434/5649/5783/files/43534242783.pdf
    • https://static.usrfiles.com/ugd/6cf392_189177ba8d994f9aa1bb002fcc0c2b97.pdf
    • https://static.usrfiles.com/ugd/e6092c_2233a4c04bf3442ea2b7501b3b73042a.pdf
    • https://static.usrfiles.com/ugd/7f46b5_3eb7323ce7184974afae9628532343ed.pdf
    • https://static.usrfiles.com/ugd/c83fdb_624d9bce866347deb03cfa4594cddda3.pdf
    • https://static.usrfiles.com/ugd/33ab24_ed25445d9d0e4dd8a43f878cfe4730d2.pdf
    • https://static.usrfiles.com/ugd/ee6770_9dbcf201fc0d4a1c9ca844ee5ac80d6b.pdf
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/sawekeka.pdf
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/96347004741.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_off00007b0b.bin
f9035559627f18f033c7d79824b767dd8be165bef913b253cfe29bb67ac01127		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0B 5184 bytes
font_01_sfnt_off00008cab.bin
22e584656a3d3154802f375d3f56ef15e637e95b7e4e960992f7026a920952a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAB 10364 bytes

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