Malicious PDF — malware analysis report

Static analysis result for SHA-256 affc263ad89aba97…

MALICIOUS

PDF

41.5 KB Created: 2020-08-17 15:29:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 520a6e92a7313a3b924934cdd6f49420 SHA-1: ad9f2fcfe3c6873743e3bdb143047d11569f25c7 SHA-256: affc263ad89aba97ea52d2ec80ff6a241cd51619c97ed3bcfbe826ccf2aa7b36
128 Risk Score

Malware Insights

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

The PDF file contains a high number of external links, many pointing to a link farm hosted on Shopify, and one critical link to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'easy budget planner' and includes the malicious redirector URL, suggesting a lure to download potentially harmful content. The presence of a visual download button heuristic further supports this attack pattern.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=easy+budget+planner+free+printable+worksheets
    • http://pesanafe.wildwoodacres.com/uploads/1/3/1/8/131872303/xaremowog.pdf
    • http://files.naba-hairstreak.com/uploads/1/3/1/4/131409526/b11c8cbc9.pdf
    • http://files.goldcoastpaediatrics.com/uploads/1/3/0/8/130813750/mireguwagokariputem.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/balumobusiladodinaboxuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/48590575382.pdf
    • https://cdn.shopify.com/s/files/1/0451/7157/2885/files/behaviour_modification_psychology.pdf
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/wukemesudoseg.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/41445418108.pdf
    • https://cdn.shopify.com/s/files/1/0433/4888/5662/files/90329689035.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/bidutopapo.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/wixadoxuvawazad.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/bafibixap.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/kusobepesisogazu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/jojav.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_off00006372.bin
907c3636713be322cb14f7547ea5f417d274a8d93b9d36fbd0873fe31a85d81a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6372 5656 bytes
font_01_sfnt_off000076c4.bin
daf1bca1639b37f6248a5108603566ee7c0850335a49a7a1f90b28de87c92e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C4 10060 bytes

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