Malicious PDF — malware analysis report

Static analysis result for SHA-256 d287763a5cb6c03f…

MALICIOUS

PDF

37.3 KB Created: 2020-08-29 08:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bed2563005341cd70ef80aaffce26393 SHA-1: fa1d4871276b8faeb0b768ac6ca8656d5af60a68 SHA-256: d287763a5cb6c03f9f60bde213a9912fb2580c28999dc4dae9a76244a7303e43
150 Risk Score

Malware Insights

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

The PDF contains a deceptive lure, presenting itself as a 'free printable to do list with checkboxes' to entice users to click a link. This link, https://ttraff.com/wix?keyword=free+printable+to+do+list+with+checkboxes, points to known malicious redirector infrastructure. The document's structure and embedded links are indicative of a phishing or redirection attack designed to lead users to harmful 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.com/wix?keyword=free+printable+to+do+list+with+checkboxes
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/brownian_motion_calculus_wiersema.pdf
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/complementary_supplementary_vertical_adjacent_and_congruent_angles.pdf
    • https://cdn.shopify.com/s/files/1/0432/9963/5355/files/72353723527.pdf
    • https://static.usrfiles.com/ugd/b8c837_86c9a4350dd940938455b2054075c08f.pdf
    • https://static.usrfiles.com/ugd/b8c837_1eb70771c05c47339808ce0a2527449b.pdf
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/namibaje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78682713185.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/68969413617.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jobevemavesofidubuxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/11112043739.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/92565581726.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_off00005426.bin
6ad2eba119f117c6465b88beaf018531c46c23cf0e05ca1919109c3c614f3fea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5426 5480 bytes
font_01_sfnt_off000066c4.bin
19377ba4ec065a6b8f0cee668c16b5520e93ac39e60804c5061b9c1665690a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66C4 9880 bytes

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