Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b64dfcbaaacb2b5…

MALICIOUS

PDF

50.2 KB Created: 2020-07-15 20:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52794fb1396ee76e540ffb9a5a694063 SHA-1: 17c051607b4fa246fe703bd5e708011387909251 SHA-256: 1b64dfcbaaacb2b51f58df1ec4f171776fa29ce4d70f52e07186b8a32630e8e6
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, disguised as a user manual, to a redirector URL. This suggests a phishing or scam attempt to lure users to malicious infrastructure. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the presence of a link to known malicious infrastructure, specifically `https://ttraff.cc/wb?keyword=bose%20bluetooth%20speaker%20user%20manual`. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation or to host further malicious content.

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/wb?keyword=bose%20bluetooth%20speaker%20user%20manual
    • http://files.lquertportfolio.com/uploads/1/3/2/3/132302913/1691a26110eba5.pdf
    • http://files.kca-agtb.com/uploads/1/3/1/3/131379115/8592847.pdf
    • http://files.alexandrathurston.com/uploads/1/3/0/8/130814914/lawiwi.pdf
    • http://files.mealprepdaily.com/uploads/1/3/1/1/131163856/4842700.pdf
    • http://files.wiseturtleacupuncture.com/uploads/1/3/1/3/131398449/499d4e.pdf
    • https://vavokoze.files.wordpress.com/2020/06/rimusowuxuxavajag.pdf
    • https://gibufitapow.files.wordpress.com/2020/07/60050701048.pdf
    • https://wefuziviwuve.files.wordpress.com/2020/07/bulijunidewasiw.pdf
    • https://pigejonuzona.files.wordpress.com/2020/07/mizaratiwivexufome.pdf
    • https://linutinoruso.files.wordpress.com/2020/06/votaremutubikodi.pdf
    • https://sesefuvosoxi.files.wordpress.com/2020/07/36738443360.pdf
    • https://romepaxa.files.wordpress.com/2020/06/42504064671.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/mesutebexetidomot.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/86747344145.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47171602999.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/gijumuwetimixujefipida.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/20774964448.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80463449019.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/2016200603.pdf
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/muviwefutidogaxofabo.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_off00007a36.bin
be9ab63589061680158c51dc1493b16170ffbec9aa4692ec5d1c98ade2b5cfe5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A36 5144 bytes
font_01_sfnt_off00008b87.bin
78cadfc8d20745a7fc3ac761ec0b45a272087e79e07a05db41139c23f2657477
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 14212 bytes