Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1999efa9cd0731…

MALICIOUS

PDF

38.1 KB Created: 2020-08-06 09:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39aba8e6407e87ea4165818464849358 SHA-1: 75d52c728b89e27fcb7fee4ec4b75674ce82fdb8 SHA-256: 3e1999efa9cd0731c2983cfca8c599732c748a54d7bc4a738ccda1a55597b902
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a known malicious domain, ttraff.cc. This domain is used to obscure the final destination, which is likely a phishing page or a malware download. The document body and heuristics indicate a lure to download content, further supporting a malicious intent. The presence of numerous external links, many pointing to Shopify domains hosting PDF files, suggests a link farm or SEO manipulation tactic to increase visibility and click-through rates.

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=download+cengage+organic+chemistry+for+jee+advanced+pdf+free
    • http://files.gabiroach.com/uploads/1/3/0/8/130813364/6891265.pdf
    • http://xemijo.drsunshinecellfoods.com/uploads/1/3/0/7/130775320/xiwosuzemexu_kajenoriguvik.pdf
    • http://files.vanesanieri.com/uploads/1/3/2/6/132681482/xiras_puwokoli_tibiw.pdf
    • http://files.kingdomofhabbo.com/uploads/1/3/0/7/130776073/1515318.pdf
    • http://files.perennialplanters.org/uploads/1/3/0/8/130815095/wunujexatos_legowe_nikadibuni.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/munaja.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/85167201716.pdf
    • https://cdn.shopify.com/s/files/1/0436/2344/8736/files/update_npm_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/bawunu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3767/0041/files/96056927277.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/marebofelasebixabab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdf
    • https://cdn.shopify.com/s/files/1/0429/9223/8745/files/sbg_ac_bridge_mode_setup.pdf
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/74238209587.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/ximatefunovevuxoko.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/biwun.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/91370282765.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_off0000547f.bin
5ffe606506f2dca47c8a493f77410c5eafbfc6300060e59d2386f989b4e583a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x547F 5896 bytes
font_01_sfnt_off00006893.bin
a1b76587955bb6f12c789e96ad564ec9f05f42711e11d626aee756917f16630a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6893 10136 bytes