Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c74a758e56c8c9e…

MALICIOUS

PDF

43.2 KB Created: 2020-08-03 23:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adf6dbbf4a60549d6e9a797dbdd4757d SHA-1: 06c244dee5ea4db0496779cd15908f10ed749141 SHA-256: 7c74a758e56c8c9e59a669ca984b7ef1935bfda610285a35588a02aa1fb66edf
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is flagged as malicious. It also hosts a large number of external PDF links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The document body contains the URL that is also present in the heuristics, indicating the primary lure. 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.com/pify?keyword=100+books+to+read+before+college+pdf
    • http://jaluna.nmcchildrenschoir.com/uploads/1/3/0/9/130969472/0aaf4f7a26.pdf
    • http://files.georgemasonrw.com/uploads/1/3/1/4/131409526/0ba38261541c0.pdf
    • http://files.sandiegomusiccoach.com/uploads/1/3/0/8/130813546/fodolimoxupopolifeso.pdf
    • https://cdn.shopify.com/s/files/1/0432/7355/2028/files/suxoragodadede.pdf
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/rifuxasipetazagedakigad.pdf
    • https://cdn.shopify.com/s/files/1/0436/9167/1705/files/warofotapureloxax.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/19474172049.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/xiviwovokij.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7012/files/jogaxijozemax.pdf
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/add_an_existing_project_to_github.pdf
    • https://cdn.shopify.com/s/files/1/0439/8897/5774/files/mupevixi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1520/files/72381365763.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/99093964384.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/88782157838.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/12496431238.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_off0000695f.bin
354b054054eb98369223800c2df54ce7eaaf9baf7186371225bee73504c6cdd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x695F 5628 bytes
font_01_sfnt_off00007c91.bin
623caf8fade80131d663a1d13920263cb4df02a88f603f68127863b058a4a739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C91 10316 bytes

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