Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d977034829f835…

MALICIOUS

PDF

43.0 KB Created: 2020-08-10 07:01:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 490492db3aac2eecadf7057609ca65dd SHA-1: 9fae2912ae8b2755044ca3fc8a3e27d5ccc27eb5 SHA-256: d5d977034829f835e4b6139d7493bad95995dbe8db0551a75df5c0c2989c139f
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF_MALICIOUS_REDIRECTOR_LINK' pointing to 'https://ttraff.cc/pify?keyword=adenomegalias+retroperitoneales+pdf'. Another heuristic, 'PDF_SEO_LINK_FARM', indicates a mass of external PDF links, suggesting a tactic to broaden reach or distribute malicious content. The document body is heavily obfuscated and contains what appears to be a URL, further supporting the malicious redirection pattern.

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.cc/pify?keyword=adenomegalias+retroperitoneales+pdf
    • http://files.juliadavies.net/uploads/1/3/1/3/131398242/rilos.pdf
    • http://dokadov.ugandaspinesurgerymission.com/uploads/1/3/0/7/130776326/lidopakini_genosinisuka.pdf
    • http://files.crazyabtcupcakessd.com/uploads/1/3/1/3/131379724/beleduwezezib-lomusikexoke.pdf
    • http://files.larcofvaldosta.org/uploads/1/3/2/6/132696274/5ea59.pdf
    • https://cdn.shopify.com/s/files/1/0440/8557/5845/files/kwik_way_loaders.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/59551465886.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/25060553201.pdf
    • https://cdn.shopify.com/s/files/1/0438/1409/2960/files/simon_xt_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/jixibuke.pdf
    • https://cdn.shopify.com/s/files/1/0437/8473/2829/files/dozigi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/zexufowalelunitopapo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4418/1928/files/50541222594.pdf
    • https://cdn.shopify.com/s/files/1/0433/7064/3614/files/mp4_to_jpg.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/mukujevada.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.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_off00005fba.bin
7b2d80cb5b02250b88f27972c0be327bc034f438679c16a7a34dc85cb60d13a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBA 5348 bytes
font_01_sfnt_off000071d0.bin
78c0cfd871492d2c76a5414c6edecf20d39b3fa9d74bf9b7bdf16b065c03cb72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D0 14772 bytes

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