Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79bd9d9ea7bbbcc…

MALICIOUS

PDF

42.2 KB Created: 2020-09-08 01:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56d0322bf832785406ec5dfac423e424 SHA-1: 3d7ae6bd5530575fb9f33592ffa397536a4ff1d3 SHA-256: d79bd9d9ea7bbbccd595b734a05ede37d8323e50af8b09650d94811ecca2186f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.club/wix?keyword=fall+color+report+galena+il', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to the URL's keyword, suggesting a lure. The presence of numerous links points towards an attempt to direct users to malicious infrastructure, likely for phishing or malware delivery.

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.club/wix?keyword=fall+color+report+galena+il
    • https://static.usrfiles.com/ugd/a4d998_3bdc14b11aa447c1bd4388b2ffcb17b7.pdf
    • https://static.usrfiles.com/ugd/9421c8_073cc85bfcf94d20a4161cc3d541d135.pdf
    • https://static.usrfiles.com/ugd/ef7b09_2a941e706e104b6599da0dd11e4a1e59.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/kupimijewiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/1463/6198/files/nixuvojopovenulanusar.pdf
    • https://cdn.shopify.com/s/files/1/0434/2130/2935/files/vopidon.pdf
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/etiology_of_hepatitis_c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xasojikunu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/portugus_xxi_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/bhagavad_gita_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/pizemosizegusuxesanorubij.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/gikipazetozususi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9777/4497/files/tratamentos_para_deficincia_de_vitamina_b12.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/pijokenusenonusin.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_off00006808.bin
ff6dd5da689a61c66539c728a22d0912393a3728bb051f72519075d5ae73c28a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6808 4880 bytes
font_01_sfnt_off000078b5.bin
5bcc4ef5aeddd0bfaa016d7e9788db9fd96c5a08575b5e58f420eff3cc3ea9c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B5 10408 bytes

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