Malicious PDF — malware analysis report

Static analysis result for SHA-256 a008722f835364a7…

MALICIOUS

PDF

42.6 KB Created: 2020-08-29 10:03:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6376a9e4fd89513ff0cedbcf780f69cb SHA-1: c4a78ed5a5158225e4316cb941e0d98a57b2ff4b SHA-256: a008722f835364a791fa932e024605a168346b771e42ceb3a6ba5a5ff4c09c7b
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to contain text related to academic reasoning, likely as a lure. The presence of a link farm heuristic further suggests an attempt to distribute malicious content through seemingly legitimate-looking documents hosted on platforms like Shopify. 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.com/wix?keyword=inductive+vs+deductive+reasoning+nursing
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/puluwofutinixawezezineked.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/angiotensin_converting_enzyme_ace_inhibitors.pdf
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/26675917136.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/nitro_cracked.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/bamasufigarekib.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/16642344403.pdf
    • https://cdn.shopify.com/s/files/1/0436/4579/6512/files/17101610561.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6565103434.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/15914197896.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/wureru.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2491/files/excel_adding_totals_different_sheets.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_off000068d0.bin
e98d0f0e11587aa52a90ce0f2725789c72d89557d3346be140f8d79b4a434d8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D0 5072 bytes
font_01_sfnt_off00007a1a.bin
326f75fffd02764d708d974482e0ad1759457f6c083f64f50c3395ed1d47438f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1A 10332 bytes

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