Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae46936593941db…

MALICIOUS

PDF

45.0 KB Created: 2020-08-11 23:47:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b970445bd75c5ba929efe5f35079c49 SHA-1: 1b8f1640df884feb9086fe16749406b9c77be356 SHA-256: 2ae46936593941dbd19c4b7ec062d607c29cef2e31b582f03cef22ac8a316ddf
128 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.ru'. It also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs, suggesting a lure to external content. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack.

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.ru/wb?keyword=how%20to%20combine%202%20pdf%20files%20in%20windows%2010
    • http://files.riversidechapelforbes.org/uploads/1/3/1/8/131857115/xezatotaje_legupozoba_gokuluxevuk_miduduz.pdf
    • http://jegovi.premierbeachfl.com/uploads/1/3/2/6/132682883/tojofexagilijot_nikuma_fasoxovases.pdf
    • http://pegalewep.theflyingbanners.com/uploads/1/3/2/7/132740965/961573fe3.pdf
    • http://files.msnlawoffice.com/uploads/1/3/1/4/131454034/vajupomanuxe-gabuna.pdf
    • http://files.growlerlamp.com/uploads/1/3/2/6/132681368/9645313.pdf
    • https://cdn.shopify.com/s/files/1/0439/9159/7214/files/31285904720.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdf
    • https://cdn.shopify.com/s/files/1/0433/7519/8373/files/antibiograma_para_enterobacterias.pdf
    • https://cdn.shopify.com/s/files/1/0449/1198/4795/files/wozodudelisalugabuse.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6007/files/xadoviguxogoxedibemodi.pdf
    • https://cdn.shopify.com/s/files/1/0436/3255/8240/files/gulisugizozawimasura.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/cheat_codes_for_mx_vs._atv_untamed.pdf
    • https://cdn.shopify.com/s/files/1/0434/0596/7527/files/budget_2020_highlights_vision_ias.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2230/files/xipiledaxupusuxifoz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/mobufuveto.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/zodijozupefogel.pdf
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/begusavasu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/78890998326.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_off00007189.bin
1009ae5ec138f1a8ba4bce2df6ec42c2da8d3bfd662fd30c0da8bea9f2b58220
pdf-font-stream PDF embedded font (sfnt) at offset 0x7189 5516 bytes
font_01_sfnt_off00008456.bin
9145e992641d04bb294dca8350325e92eef86622323de8271794105071cc4b79
pdf-font-stream PDF embedded font (sfnt) at offset 0x8456 10136 bytes