Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfba0170a87fb9c0…

MALICIOUS

PDF

42.7 KB Created: 2020-08-05 17:07:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9e7a2fde94b470cd4738c8151525a13 SHA-1: fe9f985af272435a90623afc2ce8545dfafa0944 SHA-256: dfba0170a87fb9c0ee0d77c64d785e035b6aa9be07ab3c655cd375847aa9e00b
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=asme+b16.+5+flange+pdf'. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a link farm or redirection scheme. 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.com/pify?keyword=asme+b16.+5+flange+pdf
    • http://files.bahrainaviators.com/uploads/1/3/2/6/132695915/dolatizom.pdf
    • http://siluj.neumainnovations.com/uploads/1/3/1/0/131070786/noworinaweberax.pdf
    • http://files.precisionpitching.net/uploads/1/3/1/3/131379110/bd97a6586c.pdf
    • http://files.worldofsecupp.com/uploads/1/3/2/6/132683251/sixufaz.pdf
    • http://files.christianchildrensentertainment.com/uploads/1/3/0/7/130740458/992bf10a.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/73779956002.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/14081375473.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4634/files/software_quality_assurance_basics.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/19339296178.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/lojutebizedebiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/amenaza_de_parto_pretermino_elsevier.pdf
    • https://cdn.shopify.com/s/files/1/0437/9020/5090/files/94518303965.pdf
    • https://cdn.shopify.com/s/files/1/0437/0546/7035/files/63138175462.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/best_astrology_books_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/18567117962.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/vimisotorebaja.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_off00006189.bin
8476a5d9c957787445ea728f7a8cd68f9e5b0c723743d10bd698480beceab843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 5756 bytes
font_01_sfnt_off00007524.bin
7c55a059fe8de1a649ce4da6a0f2750c3f855ceac3e49a063c019826a5a4f5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7524 12664 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.