Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e3d41a26a2fd6b…

MALICIOUS

PDF

46.0 KB Created: 2020-09-01 01:42:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef2a43235b5101cae6e4b6c73bbf870c SHA-1: d223e4755737c6e496c9b1175fe5d10d153cd80f SHA-256: d8e3d41a26a2fd6bd1356537c31f7e06265946a81b8ce317ffe353dca51c69d1
152 Risk Score

Malware Insights

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

The PDF contains a lure related to a 'Marshon Lattimore injury report' and embeds numerous external links. One critical heuristic indicates the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/wix?keyword=marshon+lattimore+injury+report'. The document body, though heavily obfuscated, contains this URL and others, suggesting a link farm designed to direct users to potentially malicious content. The ML classifier also 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.cc/wix?keyword=marshon+lattimore+injury+report
    • https://cdn.shopify.com/s/files/1/0432/8243/2160/files/internet_manager_full_version_with_crack.pdf
    • https://cdn.shopify.com/s/files/1/0433/5478/3893/files/42617143120.pdf
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/adjectifs_possessifs_exercices_fle.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/completely_uninstall_mysql_mac.pdf
    • https://static.usrfiles.com/ugd/b8c837_e17292eb6db1468bb6f5aa040c921649.pdf
    • https://static.usrfiles.com/ugd/b8c837_66acace23f7948cab8c857045f26fa7b.pdf
    • https://static.usrfiles.com/ugd/9dda13_dde87fd497e4425e8fbbbd3ef24b3524.pdf
    • https://static.usrfiles.com/ugd/33a16d_8965d581eb374163bef9e2ba27e4ade5.pdf
    • https://static.usrfiles.com/ugd/e2b09b_e17a33ac602742cc9cb53986aad6bc54.pdf
    • https://static.usrfiles.com/ugd/b8c837_38d88a5e05be4ae1b94398722fe55f31.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b288ac6bcf0459cb27a8fc8b7ab4637.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_off0000704c.bin
42b0bdb1dad6c1542ecbfb10dde11c7ed9ca1aa07459f75e59de891c1d74f437
pdf-font-stream PDF embedded font (sfnt) at offset 0x704C 5240 bytes
font_01_sfnt_off00008208.bin
4d82ecf29e73c40c05ef1a12f2829df9dbbe50c4cbed2cecfdc69e4c184d5237
pdf-font-stream PDF embedded font (sfnt) at offset 0x8208 13180 bytes