Malicious PDF — malware analysis report

Static analysis result for SHA-256 afdd7baf90ca8b2b…

MALICIOUS

PDF

40.2 KB Created: 2020-08-05 01:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 933d2ec4d853c05849f9225bbbdff9b7 SHA-1: 98cda1997985bf3df98f17dd5f6966df74c9526a SHA-256: afdd7baf90ca8b2b26c4e82dcf012f5cc6a65b67f8635dfbe5a2c11b92d68132
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, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=barbara+cartland+ebooks+free+download+pdf', which is presented as a lure for free ebook downloads. The document body, though heavily obfuscated, also contains this URL and other similar links. The presence of a malicious redirector suggests an attempt to lead the user to a site that may host further malware or phishing 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.ru/pify?keyword=barbara+cartland+ebooks+free+download+pdf
    • http://files.womensquartermarathon.com/uploads/1/3/1/1/131163834/vupiziwazonezusujo.pdf
    • http://files.incrediblespice.com/uploads/1/3/1/6/131636903/jimadanabok.pdf
    • http://files.scatennis.com/uploads/1/3/2/6/132695492/c699aa1c5ee.pdf
    • http://files.maribellyspartysupplies.com/uploads/1/3/1/4/131453823/juwebufezula-vajamowokel.pdf
    • http://files.shamansgathering.com/uploads/1/3/2/7/132710721/86f265690757b.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/benefits_of_anulom_vilom_pranayama.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vaxopegi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/vokufezopowozu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6842/files/33979571967.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/59505388273.pdf
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/segupekaronupavakibux.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/97504286372.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/42769657441.pdf
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/8601102765.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/lujake.pdf
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/44725475366.pdf
    • https://cdn.shopify.com/s/files/1/0428/9013/3663/files/docker_machine_mac.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_off00005e7a.bin
c5830782afbdee072cae7dacffc938d7160167258d7620d00e3097cb72da647c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7A 5492 bytes
font_01_sfnt_off00007147.bin
68a5274b76bd515b53488ba2b38b3499c2fe5403cb940c199f8a1edf0670a78d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7147 9932 bytes