Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e28667f929d010e…

MALICIOUS

PDF

45.0 KB Created: 2020-08-05 23:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ec80ffa70d944f2b0f76cc3eeae41f7 SHA-1: 1fe958ba1b4b6c6c9061ef065f2fb1cff87aa7f4 SHA-256: 1e28667f929d010eeb716d81cf40ac398b934eb3289f8164556af3694d6e6317
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a URL that matches this redirector. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious destination. The primary attack vector appears to be social engineering, using a technical document lure to trick users into clicking the malicious link.

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.com/pify?keyword=spring+framework+documentation+version+5.+0.+2.+release+pdf
    • http://files.louatelier.com/uploads/1/3/1/3/131383255/pesada-puwup-nugof.pdf
    • http://files.maloofroofing.com/uploads/1/3/2/6/132695694/luliw.pdf
    • http://titixuben.consciousalignment.co.uk/uploads/1/3/1/4/131453215/sivivot_jizazola.pdf
    • http://files.agrantteacher.com/uploads/1/3/2/7/132740905/283471.pdf
    • http://files.hectorhandmade.com/uploads/1/3/0/8/130874134/nafokuzekefadoxif.pdf
    • https://cdn.shopify.com/s/files/1/0431/0722/1661/files/xewutazekeriv.pdf
    • https://cdn.shopify.com/s/files/1/0432/5762/6792/files/50230736662.pdf
    • https://cdn.shopify.com/s/files/1/0433/5465/2822/files/join_files_into_one_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/safuginogatujato.pdf
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/ugly_s_electrical_reference.pdf
    • https://cdn.shopify.com/s/files/1/0431/4248/0021/files/stick_rpg_2_walkthroughs.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/vamolirilebepesijudesiji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/xoretinosakixituxonew.pdf
    • https://cdn.shopify.com/s/files/1/0432/2289/2711/files/lonegopes.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/22758818.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/41159960242.pdf
    • https://cdn.shopify.com/s/files/1/0439/9503/7854/files/roremoxinuruboxek.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_off0000678d.bin
dd5c73a148bdfda74f7ee41a36f0c88e06bdece84b149ab5eed0dffcfba614b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x678D 6224 bytes
font_01_sfnt_off00007cd4.bin
ade12c9f8cd1a72206d60ce4a3b76a82c1add038a2b08ee6856c61698ebdd9a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD4 12908 bytes