Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e929e440240b31…

MALICIOUS

PDF

66.3 KB Created: 2020-08-30 08:19:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fe8e3bc10a434952233dcacce6f4189 SHA-1: 72b8468422ecda5ef93ca4225f6cc9d5f8de06e3 SHA-256: a3e929e440240b314187e9e955b4f158bb0a231148835c1e6557b63c5fdd152a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=que+es+el+sistema+octal'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one hosted on cdn.shopify.com. The document body, though heavily obfuscated, appears to contain the same malicious URL. The primary attack pattern involves luring users to a malicious site via a deceptive link.

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/wix?keyword=que+es+el+sistema+octal
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xiguxalenagidofivixonagez.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/the_beginner_s_book_of_salah_by_ghulam_sarwar.pdf
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/fobidonisuneronuvojuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/90356662452.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/bobegepoxi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/zolinabubozigera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdf
    • https://cdn.shopify.com/s/files/1/0457/3675/5356/files/telat.pdf
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/mubuxajux.pdf
    • https://static.usrfiles.com/ugd/48d9a1_9cf05a411501447ba41f0baea4d975c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_ec31714a27b74abebb7d7c62c86ad74a.pdf
    • https://static.usrfiles.com/ugd/5b5da7_ef4d0d93bf7d4f59834f0ca6c69531ce.pdf
    • https://static.usrfiles.com/ugd/79cb75_c1ef7bcd1395403da58ba4b815716407.pdf
    • https://static.usrfiles.com/ugd/b8c837_cfcda2e4e5bd4a3d8b7503cf0da89f99.pdf
    • https://static.usrfiles.com/ugd/3f4b99_610711717ca54bd6af4ffa6b10d9217e.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d41640d3c184fca8f35edf71921ecee.pdf
    • https://static.usrfiles.com/ugd/c1de29_86ac79b647a942649a849b1b9bccaccd.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000adbc.bin
9bb39eda2c04bec0f29df66aa8fcd82ec6d66774e3f5554d10d0e1e9696a0c7b
pdf-font-stream PDF embedded font (sfnt) at offset 0xADBC 4684 bytes
font_01_sfnt_off0000bdb0.bin
ac62004fece21844af1ada20dfb1260f2d7525f2e6e9be662a4a7d1df5db5d7f
pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB0 15140 bytes
font_02_sfnt_off0000ec2e.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2E 4324 bytes