Malicious PDF — malware analysis report

Static analysis result for SHA-256 730697ed3027a4aa…

MALICIOUS

PDF

41.9 KB Created: 2020-08-16 16:53:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1409c3853179a2febb55e9089d62782 SHA-1: 0a9d470530a11ed4600c9603aeeaebab0c0c8c00 SHA-256: 730697ed3027a4aa5c11af1f14451e893e7a8a4ea5b2bc5fbd1fe0155046a482
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily corrupted, contains text referencing 'Netflix work on planes' and the malicious URL, suggesting a phishing or scam lure. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=netflix++work+on+planes
    • http://files.sunwestsportswear.com/uploads/1/3/1/3/131398385/tapowos.pdf
    • http://mupalof.h2solutionsinc.com/uploads/1/3/1/4/131454696/gimuzifuriwola.pdf
    • http://files.handmadebylouisa.com/uploads/1/3/0/7/130775827/25f7f89e987e0.pdf
    • http://files.molinebaptist.org/uploads/1/3/1/3/131379792/tixorubolakavij.pdf
    • http://files.yohmansgarden.com/uploads/1/3/1/4/131454556/susazevozag-bafudasa-penux-vidaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0946/files/dupolupajuniwukuru.pdf
    • https://cdn.shopify.com/s/files/1/0431/3356/7125/files/critical_analysis_essay_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/9639/2348/files/vbscript_open_excel_file.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/pigaxok.pdf
    • https://cdn.shopify.com/s/files/1/0438/5567/5542/files/2111592837.pdf
    • https://cdn.shopify.com/s/files/1/0431/2301/5841/files/nda_general_ability_test_question_paper.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/49100271373.pdf
    • https://cdn.shopify.com/s/files/1/0433/2155/7147/files/gevigeribexovura.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/woburorofinuxup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20675343362.pdf
    • https://cdn.shopify.com/s/files/1/0439/5224/2856/files/namujoxemixavirakodamof.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_off00006671.bin
f33dddd7e5f6c435615c787e5b3b805113548b192c1c03f1c12dfcf26c5876c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6671 5088 bytes
font_01_sfnt_off000077ea.bin
2fa5139eb9c97012447b8cc1b7b01fb256a57417e5a743be1c02a71c19d90678		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77EA 10196 bytes

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