Malicious PDF — malware analysis report

Static analysis result for SHA-256 333795d558581233…

MALICIOUS

PDF

45.3 KB Created: 2020-08-06 08:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87ae82999c76fc2622df70bfe8271541 SHA-1: 4450c105e8e18a948a6f97ade83227db158ac57a SHA-256: 333795d558581233a23f2ec45caff602d5437a3301b49d608fa82700dc3e75c1
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure via the URL https://ttraff.com/pify?keyword=ethylene+dichloride+msds+pdf. Additionally, PDF_SEO_LINK_FARM indicates a large number of external PDF links, with the first being https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdf. The document body, though heavily obfuscated, contains references to these URLs, suggesting a lure to download or view further content.

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=ethylene+dichloride+msds+pdf
    • http://files.beavsworld.com/uploads/1/3/0/9/130969937/zotuzuponavi_dowemarase_jetavovubodadu.pdf
    • http://files.nasuwtrochdale.org/uploads/1/3/1/4/131437593/sovipaxokuk.pdf
    • http://files.isoandbusinessexpert.com/uploads/1/3/0/8/130813797/noxodak.pdf
    • http://files.themontclairunderground.com/uploads/1/3/1/1/131163734/zapaginos.pdf
    • http://files.nasuwtrochdale.org/uploads/1/3/1/4/1314
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85986419962.pdf
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/95891271751.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2934473971.pdf
    • https://cdn.shopify.com/s/files/1/0434/5446/4165/files/gesonepawixexisedux.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/ganunuzemawewo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/dogokalenuzezamu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/jafosatinufejejel.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/85126741111.pdf
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/wogupazulelim.pdf
    • https://cdn.shopify.com/s/files/1/0428/7037/4566/files/gadekaluxu.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_off0000725a.bin
29cbad5d4e599673794678aa5f8615a086f79c4d71cdd63c81f736b4cf3b6ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725A 5244 bytes
font_01_sfnt_off00008417.bin
72eb7cd29e6250c5a4d4a273184f04f23831a57768dcead73e0e25e07102c4fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8417 10676 bytes

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