Malicious PDF — malware analysis report

Static analysis result for SHA-256 9974ddcc96d17a36…

MALICIOUS

PDF

43.7 KB Created: 2020-09-10 06:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06a9c0ec60fbb61a78e7076aaf58e93f SHA-1: 2507f37e1d77e9bff4cdf2fc807a35ae206dd66e SHA-256: 9974ddcc96d17a36fed3de9a0c41aac17104fd70e0bc6d0f24ba80b66429ed92
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF contains a mass external link farm, with the primary malicious redirector URL being https://ttraff.link/wix?keyword=deloitte+uk+digital+transformation. This technique is often used to obscure the final destination of malicious links, leading users to phishing sites or malware downloads. 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.link/wix?keyword=deloitte+uk+digital+transformation
    • http://zexin.made-by-nature.be/uploads/1/3/2/6/132681481/6114034.pdf
    • http://zajebolo.natickpegasus.org/uploads/1/3/1/4/131409090/2566457.pdf
    • http://files.handson-la.com/uploads/1/3/1/8/131872199/mafiwapepu-zinud.pdf
    • http://files.oa-involve-agewell.ca/uploads/1/3/2/8/132814972/9798340.pdf
    • http://durad.torontograffiti.ca/uploads/1/3/1/6/131637316/zumori.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/wordly_wise_book_8_lesson_15_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/pibegijalafojeberigomobi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/17513195154.pdf
    • https://cdn.shopify.com/s/files/1/0430/4352/0665/files/84894574830.pdf
    • https://static.usrfiles.com/ugd/e4ff69_34dc78dc5183470eb3fe0426884e08ca.pdf
    • https://static.usrfiles.com/ugd/68ec51_53026a9ebb4a4ac782d99b766376ca8b.pdf
    • https://static.usrfiles.com/ugd/c4b402_f018da76773149eabaeb70e38b52e3a6.pdf
    • https://static.usrfiles.com/ugd/32acb1_7cfee74a190f4feaba3a2d1386a6226c.pdf
    • https://cdn.shopify.com/s/files/1/0461/4337/3480/files/nivijokazubozij.pdf
    • https://cdn.shopify.com/s/files/1/0434/5767/5431/files/trains_rising_sun_rules.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_off00006bd3.bin
7c333a8b005ce220fdc1e49391b41f531633851bb0f1fa0370249581a7da4995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD3 5288 bytes
font_01_sfnt_off00007dc7.bin
882d01ad00e6ed6682dcb1f9e8c347b38a27d9284b125bf7eddd775ba1172842		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC7 10744 bytes

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