Malicious PDF — malware analysis report

Static analysis result for SHA-256 10219af016bec6b5…

MALICIOUS

PDF

49.0 KB Created: 2020-08-30 02:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 468c51f2e367bcde3472c6db9a732182 SHA-1: ce7116b9439f94569b4c7056c6813b8f2380a6bb SHA-256: 10219af016bec6b5c0e7dfe78f121a178e9ea52be3d9f2bda569bb06f9292e89
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a known malicious redirector, ttraff.com. This indicates an attempt to direct users to malicious content or phishing pages. The PDF also contains a large number of external links, suggesting it's part of a link farm designed to manipulate search engine results or distribute content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=moto+g6+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/9186/8310/files/89850740823.pdf
    • https://cdn.shopify.com/s/files/1/0435/1705/1039/files/denamuzudaruzinitamaso.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/86459147273.pdf
    • https://cdn.shopify.com/s/files/1/0437/5789/5841/files/jazobadob.pdf
    • https://cdn.shopify.com/s/files/1/0436/0205/1229/files/jexuzopopepisusonuxesot.pdf
    • https://static.usrfiles.com/ugd/b8c837_faf09e797d1f4b0fb87d35e76c5b673f.pdf
    • https://static.usrfiles.com/ugd/cd79e3_7d991da6f2a541e3b04f06234d4f86ad.pdf
    • https://cdn.shopify.com/s/files/1/0462/2925/8389/files/edakkad_battalion_06_all_songs.pdf
    • https://cdn.shopify.com/s/files/1/0440/8056/2326/files/410_shotguns_at_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0432/7623/9014/files/zetijiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/9725/8136/files/85680136486.pdf
    • https://cdn.shopify.com/s/files/1/0435/4326/5434/files/vubidubi.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c74f14b5ba3450f8223cac2d058149f.pdf
    • https://static.usrfiles.com/ugd/289c5e_dec557459a40435388dde85dae4b9d06.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b91.bin
84cbfa50decd70deec038451094d863b927fa5a05ff86a710c9c0cb194e926aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B91 4888 bytes
font_01_sfnt_off00007c2e.bin
4f98083e67f6a81481f24bfeddfc219848be0bd85e2718f9a5e935e822de1205		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2E 9852 bytes
font_02_sfnt_off00009e2d.bin
b9f42656b63d2ca974041eac3e1c6a4f778daa7429e6f2bdab926c77c8db465b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2D 17028 bytes

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