Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea04a40b142b38ae…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 16:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ba5b13096b83f4fbc3e02b5582ef1e0 SHA-1: 2c37ccb4c0d5ab304c0bf93189f3f11ac101b241 SHA-256: ea04a40b142b38aea2901bd36f2c991580f2ba8a99b5ce6c569fc273575a419f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, including a known malicious redirector at https://ttraff.cc/wix?keyword=amit19+deals+world. The heuristic PDF_SEO_LINK_FARM indicates a link farm, suggesting the document's primary purpose is to drive traffic to external sites. The document body contains garbled text but includes the malicious redirector URL and several Shopify-hosted PDF links, reinforcing the link farm attack pattern. No scripts were extracted from this sample.

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=amit19+deals+world
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/disetotetuzawefedajuwoven.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/sakarepovubofuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/78212140948.pdf
    • https://cdn.shopify.com/s/files/1/0450/2742/6468/files/xitevetula.pdf
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/sociolinguistics_by_hudson.pdf
    • https://static.usrfiles.com/ugd/b8c837_44b0347737ab4394b3e02defa38c2303.pdf
    • https://static.usrfiles.com/ugd/c63dba_2aa5e3e3b7c24867b33b3c26b6574510.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a9e319c0919441899b43172727d5cb5.pdf
    • https://static.usrfiles.com/ugd/b8c837_eecf3555d2324c12a924b07dbb9659c8.pdf
    • https://cdn.shopify.com/s/files/1/0447/9208/6685/files/economist_style_guide_2019.pdf
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/12th_science_biology_practical_book.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_off00005164.bin
609a84c72948d8084cb536fbcbedd12b710f65e530ed8c8c1d741136eee5d39d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5164 5260 bytes
font_01_sfnt_off00006344.bin
334d5a047ff9e2f490dfafa77569af0be3aeea67164f4fbdd3d0a2fcf710ecff
pdf-font-stream PDF embedded font (sfnt) at offset 0x6344 15248 bytes