Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ab03bb78c0816b2…

MALICIOUS

PDF

43.1 KB Created: 2020-08-29 22:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fef4bbf523fc78bdfd5e2dec7ff261dd SHA-1: 31b92a75343ee55c526e98a044448b696090d5f3 SHA-256: 4ab03bb78c0816b28c5ed099a71cd1751503d911f0bf01c060eb436aff4fb2a4
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The primary malicious link is https://ttraff.me/wix?keyword=the+princess+diarist+carrie+fisher, which likely leads to a phishing page or malware download. The document body is heavily obfuscated and appears to contain embedded URLs, further supporting the malicious redirector heuristic.

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.me/wix?keyword=the+princess+diarist+carrie+fisher
    • https://static.usrfiles.com/ugd/003b86_602c07350af64c3fb42cabf8e43932ae.pdf
    • https://static.usrfiles.com/ugd/b8c837_9015b1e3454d4fabb526a9633a00aa3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_675826b6c0e14a5c887689b8dad0a5f5.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/black_seed_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0437/8119/3885/files/cantate_domino.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/59707275560.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/zofazevufo.pdf
    • https://static.usrfiles.com/ugd/b8c837_edfd736b7b72421ea60e97ff0a21e8e9.pdf
    • https://static.usrfiles.com/ugd/353d00_9827f3928f0c402f86f635186a6f04f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e1b23471f6f4d3e8f2d2802ff2bfa3d.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_off00006b66.bin
5f7bd3e9bf861ca26c9b0020d80ae4233f74f884e6bb716637fd442ba35decb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B66 5160 bytes
font_01_sfnt_off00007ceb.bin
8ed29f41607c0ad4fb772ace5d6962876c1316871c4d345c619c9bb04c46bbd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEB 10360 bytes

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