Malicious PDF — malware analysis report

Static analysis result for SHA-256 389cec592c726a57…

MALICIOUS

PDF

57.2 KB Created: 2020-08-07 09:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59bd3ed15ef96688e0bc7958f11b0ba2 SHA-1: 8e43deaee82dc71a14085004ca04263e0f8b9ecf SHA-256: 389cec592c726a5797a787b683e8610821a39b8e49c02dc15b35af8614878330
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking URL, suggesting a lure to a malicious site. The primary attack pattern involves tricking the user into clicking a link that redirects to malicious infrastructure.

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.ru/wb?keyword=resultant%20forces%20ks3%20worksheet
    • http://dimiv.communitygospelchurch1.com/uploads/1/3/2/6/132681513/04ac20be40c498.pdf
    • http://files.josephlesliepace.com/uploads/1/3/1/4/131438784/212b19.pdf
    • http://files.proyectocubabat.com/uploads/1/3/1/4/131453007/6191197.pdf
    • https://cdn.shopify.com/s/files/1/0430/6052/7265/files/javascript_get_url_parameter.pdf
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/5155432967.pdf
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/nazemilavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/70652884549.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4012/files/58005653866.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/astm_a370_19.pdf
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/32201345775.pdf
    • https://cdn.shopify.com/s/files/1/0437/6405/6225/files/7777857353.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/306207664.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/fefumupaloma.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/cockatiel_care_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/7346/0631/files/bakery_business_proposal_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/93766928736.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000934a.bin
048317dd8dc9266c277af063327594d122e03fc2557467471fe9676c205408c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x934A 5132 bytes
font_01_sfnt_off0000a4ce.bin
e6807c7b75a2b1791abc8dac0ca550a1b077ba43e63dc53069b6af81c324cc17
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4CE 10900 bytes
font_02_sfnt_off0000c9cb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CB 4324 bytes