Malicious PDF — malware analysis report

Static analysis result for SHA-256 b22bf03bf3ec2dbb…

MALICIOUS

PDF

39.7 KB Created: 2020-08-20 02:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eb43b9b0ef79084e7811762f03fba8d SHA-1: 481683855ecc9e608a233b617fb91438ebc9c0c3 SHA-256: b22bf03bf3ec2dbb10e233b1a00aba0b98b86dc64d2a1c0d5e29473d125216dc
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=wizkid+superstar+album+full'. The document body, though heavily obfuscated, also contains this URL and references to a 'Wizkid superstar album full', suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to improve search engine ranking for 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.ru/pify?keyword=wizkid+superstar+album+full
    • http://files.julienoles.com/uploads/1/3/0/7/130738912/lozavawimenen.pdf
    • http://roletivuk.handmademyrth.com/uploads/1/3/1/3/131381241/jajaj-dujujurapidit.pdf
    • http://nevip.asadeltanu.org/uploads/1/3/0/8/130874493/zasurov.pdf
    • http://files.highfivegolfclub.com/uploads/1/3/0/7/130775503/pajubu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/rekulam.pdf
    • https://cdn.shopify.com/s/files/1/0432/1938/6526/files/ios_13_beta_3_link.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3089/files/45456658475.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8109/files/76916256700.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6852/files/tibabigaseloduv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/blackmail_song_dj.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_off00005d07.bin
de2ae0e2dd12f2d123e86040bc1b52b099a7a56677edb6126977b7ae68dfad26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D07 5452 bytes
font_01_sfnt_off00006f8f.bin
55055e5b7fa2e1b64d436a8a0e67bbf9d841ab968f70bc250ca79b7441959c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8F 10192 bytes

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