Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9cff97d34022fc2…

MALICIOUS

PDF

56.7 KB Created: 2020-08-30 17:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c2566094d472d49eeb0b198a3e09ce3 SHA-1: fdfa6e48fe8428791464527a0d2238145e3966e8 SHA-256: b9cff97d34022fc22bca8095bd28c4ef2acd3cfb399ff13ad82b94ab6a8fb824
120 Risk Score

Malware Insights

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

The PDF file contains a message indicating that no program is associated with the file, likely to trick the user into clicking a malicious link. The primary malicious URL, 'https://ttraff.cc/wix?keyword=aucun+programme+n%2527est+associ%25C3%25A9+%25C3%25A0+ce+fichier', is embedded within the document body and flagged as a malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, including one pointing to 'https://cdn.shopify.com/s/files/1/0435/9018/9215/files/20372600571.pdf'. No scripts were extracted, and the family is undetermined.

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/wix?keyword=aucun+programme+n%2527est+associ%25C3%25A9+%25C3%25A0+ce+fichier
    • https://cdn.shopify.com/s/files/1/0435/9018/9215/files/20372600571.pdf
    • https://cdn.shopify.com/s/files/1/0437/7464/0286/files/the_waking_by_theodore_roethke.pdf
    • https://cdn.shopify.com/s/files/1/0440/3996/2774/files/modalities_of_teaching.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/vegifuwizigivutu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/allergic_rhinitis_guidelines_2020_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0433/3371/4070/files/35262372017.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/boguxerarugukowoboxariro.pdf
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/nova_launcher_prime_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/ruwetefogamudoxozobusojer.pdf
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/blender_smoothie_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0462/6006/0314/files/36938685971.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6647/files/97739175330.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/1570263904.pdf
    • https://cdn.shopify.com/s/files/1/0437/1415/0553/files/blades_in_the_dark_portugues_download.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/38066122661.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_off00008a15.bin
ebed0eb4347a4246298652e86d9139b3ae0a74f3b8b1cd0eec443a9e691e36fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A15 5796 bytes
font_01_sfnt_off00009cd4.bin
ab1c4b0bf187867bb0a49573571cee3e10823f44f50b08984fc9d9d51eea4b79
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD4 18540 bytes