Malicious PDF — malware analysis report

Static analysis result for SHA-256 813d4009f6145bca…

MALICIOUS

PDF

42.8 KB Created: 2020-08-17 00:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0e003512218b37c0b76ea63e437a012 SHA-1: 1f83b35fa33f0c6f4da0d998b52bb0927ef93a3b SHA-256: 813d4009f6145bca249b1bb34a953f63114ce456462db855f4fada64e6c5c06e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector infrastructure at ttraff.com. This suggests the document is part of a link farm designed to obscure the ultimate malicious destination. The presence of a 'download button' lure further supports a malicious intent, likely for phishing or malware delivery.

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.com/pify?keyword=bare+infinitive+exercises+with+answers
    • http://files.coffscoastdbc.com.au/uploads/1/3/1/1/131164531/pukesarir.pdf
    • http://jivumid.bremertondancecenter.com/uploads/1/3/0/8/130874493/1608742.pdf
    • http://sazodo.coachellavalleyhypnosis.com/uploads/1/3/1/0/131069934/wusasedawig-pipeto-zuleviru-pisiwunisokol.pdf
    • http://files.whereyouwentphotography.com/uploads/1/3/1/4/131409074/6126332.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/dejisetelimarugagabori.pdf
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/jibibabozaza.pdf
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/72287652998.pdf
    • https://cdn.shopify.com/s/files/1/0435/5378/3957/files/besifuwusatuxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/23537655315.pdf
    • https://cdn.shopify.com/s/files/1/0434/1619/1125/files/80058116821.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/xamakabokosuli.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/warhammer_codex_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/1090/6520/files/4500881579.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/51008610667.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/fupodidofuzifedisupuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/zimivovoriduda.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_off000060fd.bin
0cb824a236c02f775923e5cb94c7c9a807d47ab839280a688d5346035345be1a
pdf-font-stream PDF embedded font (sfnt) at offset 0x60FD 5204 bytes
font_01_sfnt_off000072c3.bin
ebfe9811e5cd444c66345565e61330e6e329324473a6a735f876789c1419f852
pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 13372 bytes