Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1979476adce8e7d…

MALICIOUS

PDF

50.6 KB Created: 2020-08-31 02:19:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae19d556f7835efbe01c13f4082d3542 SHA-1: 89615b610c7200e115e6613682d6a45e0aff8cde SHA-256: d1979476adce8e7de4f988a78e79d7b989162a53bd2cf681fb7b57f6f3b907a9
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a large number of external links, a technique often used for SEO poisoning or to obscure malicious destinations. One of the embedded URLs, https://ttraff.com/wix?keyword=temps+lumi%25C3%25A8re+soleil+terre, is identified as a known malicious redirector. The document body appears to be heavily obfuscated or corrupted, but the presence of this malicious URL strongly suggests an intent to redirect users to a harmful site.

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=temps+lumi%25C3%25A8re+soleil+terre
    • https://static.usrfiles.com/ugd/7dd30d_81e182c2132a4ea1baabfc85a9ea4f00.pdf
    • https://static.usrfiles.com/ugd/be19e1_a1f1e282ac154f4984232b2ba0066eda.pdf
    • https://static.usrfiles.com/ugd/269bb8_36e928c3bb54461ea7a117f272852955.pdf
    • https://static.usrfiles.com/ugd/b11f6d_76684124286a49e782dfca465191933b.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7807bcadfb849dea0642997cd7616ff.pdf
    • https://static.usrfiles.com/ugd/432b07_799754329ce349f0b1bc3d4c22a36c18.pdf
    • https://cdn.shopify.com/s/files/1/0448/2659/1389/files/duxutezexusuvujo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0739/3435/files/devizikejoribudobomazo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/38596318459.pdf
    • https://cdn.shopify.com/s/files/1/0432/0703/2990/files/vesamuzofoxadikedifowunab.pdf
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/56047486353.pdf
    • https://cdn.shopify.com/s/files/1/0437/9043/4455/files/kazamuburar.pdf
    • https://cdn.shopify.com/s/files/1/0428/5667/7543/files/juxowod.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_off00007a83.bin
48922a5b97a67970029375bd8dfd606c409ca6feb7f37ccd45d7e6b0d22d0b1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A83 4848 bytes
font_01_sfnt_off00008aa1.bin
87b533af5db633fa9dd7198d32f8110439847ece2d0a44c6dfb6df1fd6db31c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA1 16392 bytes

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