Malicious PDF — malware analysis report

Static analysis result for SHA-256 1275358f0eca7a29…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 10:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91f134f88b19fd2799306b3a9aa8f546 SHA-1: 7c54b53a08cc1c1d9bf31bc9054e4cd66a1dd530 SHA-256: 1275358f0eca7a291cd65a076978717ecb6cb43430b34817404b291525b33afa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=launchpad+mini+driver, which is likely intended to lure the user to a malicious site. The ML classifier strongly indicates maliciousness, supporting the attack pattern of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=launchpad+mini+driver
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/a48928_fa02c349eb6349eca194555a7768c2db.pdf
    • https://static.usrfiles.com/ugd/b8c837_66738736f2ad4c5b98e62a0b1133a496.pdf
    • https://static.usrfiles.com/ugd/b8c837_c50ea909704e41b29383d42fd4759460.pdf
    • https://static.usrfiles.com/ugd/96768c_b7381e291ac64709b65eecff3df34e4f.pdf
    • https://static.usrfiles.com/ugd/47b1e8_eb7d7f4e031d492fb00e90aca44becb5.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/78335280423.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/36351348788.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/jibivusufotoduwuz.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e1aa1f06bcf4ed6b8c94da83f48776a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e91a634fb4d42afa64c2b9967012a9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_35396f3a25dc4e48b77620c942a71c0f.pdf
    • https://static.usrfiles.com/ugd/ddb60a_7a72003829ee4732a48a153297fc984e.pdf
    • https://static.usrfiles.com/ugd/0511f5_5e25451d35ba4e1aa02408280e01132b.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c7a.bin
983cbaa251722739a94bffb168b8b06da5c2350b0848afb8e8e7039adca86110
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7A 5104 bytes
font_01_sfnt_off00007dab.bin
f79bf5ef752cab61320c01f96e9a007407f9b08ef8b667312164d627fa0a7192
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAB 9900 bytes