Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4d77a8eb8ef130f…

MALICIOUS

PDF

41.1 KB Created: 2020-08-21 20:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ac80165b4402301e60d6c7a3e1dbdb SHA-1: 51a88bfd635b1fdfb4753c3eac4622fefd3b36ec SHA-256: b4d77a8eb8ef130fb10578246d3ea083c364075e412587a084446a43b462d1f4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link that redirects to a known malicious domain (ttraff.com), disguised as a 'seattle seahawks injury report'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body contains the lure text and the malicious URL. The primary attack pattern involves social engineering to trick the user into clicking the malicious link.

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/pify?keyword=seattle+seahawks+injury+report+week+9
    • http://files.carmenleonamartin.com/uploads/1/3/1/3/131380042/jexijivutume.pdf
    • http://files.theseed906.com/uploads/1/3/2/6/132681308/fazusezibawajonakej.pdf
    • http://gezopupav.interactivetutors.hk/uploads/1/3/0/7/130738799/dirurun_kifozakenu_begutinata_pinepukaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/separador_de_programa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/58543936813.pdf
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/9430147758.pdf
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/accounting_and_finance_cv_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/pepekesujoxemogubafobi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/19082005547.pdf
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/campaldino_1289_the_battle_that_made_dante.pdf
    • https://cdn.shopify.com/s/files/1/0431/0066/8065/files/css_linear_gradient.pdf
    • https://cdn.shopify.com/s/files/1/0437/9577/5650/files/peter_kreeft_handbook_of_christian_apologetics.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/xowem.pdf
    • https://cdn.shopify.com/s/files/1/0431/2462/1473/files/94470342616.pdf
    • https://cdn.shopify.com/s/files/1/0436/1738/6659/files/15801460745.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_off000061bc.bin
2469372a529aff476cedd72a04e7e962f59cd95ac730a7eb136227fc213961f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 5500 bytes
font_01_sfnt_off0000746d.bin
55d34c70ecb08cc4ad0949764c71cc8a2a59d81c9ae17fd9d7a91d336a0296f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x746D 10348 bytes