Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aead204ff1fa683…

MALICIOUS

PDF

35.2 KB Created: 2020-09-04 04:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c3a07592518a9bda30f969f06756197 SHA-1: b755cc5ee1fda5fe5ee555738ee69b3f56632ec0 SHA-256: 2aead204ff1fa6833a89479254aba33ca9cbcfc7aca2e2bf98293a3983681607
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of numerous links suggests a link farm or phishing attempt. The primary malicious IOC is the redirector URL, which likely leads to 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.me/wix?keyword=avery+template+l7165+mac
    • https://static.usrfiles.com/ugd/b8c837_ed5ff982e8504dd98857a5e5da02b28d.pdf
    • https://static.usrfiles.com/ugd/aff7ca_4bfa52ceb57246d4a9cbd73bc6e00206.pdf
    • https://static.usrfiles.com/ugd/529dbf_db1837e2b77c40d39d966d6da79ed7bd.pdf
    • https://static.usrfiles.com/ugd/345929_9538a8acc4e74df9af75c7398f3eb1ad.pdf
    • https://static.usrfiles.com/ugd/40512e_4811a62e89604476a311b25dae7ec866.pdf
    • https://static.usrfiles.com/ugd/33ab24_1c724a3b5e4e4a2baab4d2718499b60e.pdf
    • https://cdn.shopify.com/s/files/1/0435/4686/9915/files/52008499067.pdf
    • https://cdn.shopify.com/s/files/1/0434/5102/3526/files/44199349547.pdf
    • https://cdn.shopify.com/s/files/1/0433/4767/3253/files/67551594771.pdf
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/78350494348.pdf
    • https://cdn.shopify.com/s/files/1/0430/6475/4325/files/39165274251.pdf
    • https://cdn.shopify.com/s/files/1/0440/0264/0030/files/98962905162.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7240/files/92503333499.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.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_off00004b1b.bin
694056388a272d466a03f64cf8ffde2cb448de3adc880e8fcd0d27b48416b07c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1B 5464 bytes
font_01_sfnt_off00005dba.bin
5c772d7c306f8b12b8a646df990d2495565b75b8cdc4c57b7ef8d950c8e51f8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBA 10152 bytes

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