Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2a88504593acf0…

MALICIOUS

PDF

69.0 KB Created: 2020-08-06 13:43:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03f013e7c4ffa7a4e1ac7b111c33cf93 SHA-1: 1ea79a8be9ddb6750bde6fbd6bf3d1e0b8e6f7b2 SHA-256: eb2a88504593acf05c71197d7296312ba61c4b1a877101ea68baf58b15e754c5
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=charles+bukowski+libri+pdf. This URL likely serves as a gateway to further malicious content or exploits. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=charles+bukowski+libri+pdf
    • http://xozisizo.mogooch.com/uploads/1/3/1/4/131438177/2dd1ee8d3098d56.pdf
    • http://files.bartlettsmath.com/uploads/1/3/0/7/130739430/juziserevikixu_xilup_wolewewovadu_togibigevexe.pdf
    • http://files.maidstonecounselling.com/uploads/1/3/2/6/132682819/ladaru.pdf
    • http://bilusir.mychickadeesfuntasticnest.com/uploads/1/3/0/9/130969045/xalebi_bagasi_rijizuvilipal_sovasewi.pdf
    • http://files.fcadefuniak.com/uploads/1/3/0/7/130739951/dofax.pdf
    • https://cdn.shopify.com/s/files/1/0435/3084/6363/files/wow_vanilla_herbalism_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/79015706209.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/3667063471.pdf
    • https://cdn.shopify.com/s/files/1/0440/2459/4597/files/velitajavevixukijakijij.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/73247735161.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/77759395812.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/sims_4_malcolm_landgraab.pdf
    • https://cdn.shopify.com/s/files/1/0431/9028/8535/files/43102403040.pdf
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/temarovutamelex.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3541/files/anesthesia_equipment_book_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/jupexalexowomawuganarukiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/4168/3618/files/modivudi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/rixemodidag.pdf
    • https://cdn.shopify.com/s/files/1/0428/5906/9599/files/75743660165.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_off0000c484.bin
f8d5e7bec2534ccf92602dd61ef6ae745f61f9a4797a79f3c23bea0062b47ec1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC484 5332 bytes
font_01_sfnt_off0000d6a7.bin
1017808b489fba2db85f9e3747426a9480b7ebd12628d6809d0fa65251d1aa47
pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A7 15520 bytes