Malicious PDF — malware analysis report

Static analysis result for SHA-256 953a5f47694cc88f…

MALICIOUS

PDF

67.6 KB Created: 2020-08-24 00:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ff784b1256ced6a1ff204034fc7bac7 SHA-1: 43facbde439e2f9fc99bcabaf1c808203fb708e2 SHA-256: 953a5f47694cc88fb8ff06f719a07aaf94c9262b5e2dfc8859dd698e5effe9c1
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 identified as a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to lure users 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/pify?keyword=battleship+potemkin+full+movie
    • http://files.etymologynerd.com/uploads/1/3/0/8/130814680/rimexefapadaleg_nafawivesekixo.pdf
    • http://pafasasod.herovision.ca/uploads/1/3/2/7/132712416/8b9a759d921fa1.pdf
    • http://files.kingstreetbeer.ca/uploads/1/3/0/7/130776486/rekawizufukafiw.pdf
    • https://cdn.shopify.com/s/files/1/0444/3917/5335/files/administrative_manager_duties_and_responsibilities.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/wukurewogofe.pdf
    • https://cdn.shopify.com/s/files/1/0436/9324/4570/files/invite_people_to_like_facebook_page.pdf
    • https://cdn.shopify.com/s/files/1/0438/5928/0022/files/plumbing_aptitude_test_practice.pdf
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/83968368064.pdf
    • https://cdn.shopify.com/s/files/1/0450/6012/8931/files/borland_c_builder_unleashed.pdf
    • https://cdn.shopify.com/s/files/1/0434/8982/0836/files/merriam_webster_dictionary_premium_apk_offline.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9212/files/78263339053.pdf
    • https://cdn.shopify.com/s/files/1/0433/7644/3543/files/acupressure_points.pdf
    • https://cdn.shopify.com/s/files/1/0437/2824/0794/files/kentucky_schedule_a_2018_tax_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/buchungsstze_bungen_lsungen.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_off0000c4bd.bin
c4d227dd1500dcc6f7585b608fe1cf4505a6eed7694fe747af99e0e43ecf9764
pdf-font-stream PDF embedded font (sfnt) at offset 0xC4BD 5216 bytes
font_01_sfnt_off0000d66b.bin
eba7206eb8453bacb9c0619e83ba3f4621bcf86fac746b304923f1cf928f4d23
pdf-font-stream PDF embedded font (sfnt) at offset 0xD66B 13252 bytes