Malicious PDF — malware analysis report

Static analysis result for SHA-256 289b72bd53784ffe…

MALICIOUS

PDF

53.9 KB Created: 2020-08-02 08:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83b26ce3fb1543b15529439d10e9edb2 SHA-1: 5d408b9ad5eec95835c4985edf26ac212a5128f2 SHA-256: 289b72bd53784ffe73d9ba5999723a3f050fedf64879faca8d53b7d9f4efa017
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to `ttraff.ru`, which is flagged as a malicious redirector. The document also contains a lure to copy/paste clipboard content into a shell, suggesting an attempt to trick the user into executing commands. The presence of a malicious redirector link indicates a likely phishing or malware delivery attempt.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/pify?keyword=ruby+for+window
    • http://files.imaginesullivant.org/uploads/1/3/1/4/131437685/buzivaxaj_gaxajidijoluji.pdf
    • http://files.oxygenbiology.net/uploads/1/3/0/7/130739379/bulon-vufuzu-nujuji-lufodowemib.pdf
    • http://files.nishidaexpress.com/uploads/1/3/0/8/130813314/midikara.pdf
    • http://files.corbinpuryear.com/uploads/1/3/1/6/131637881/menivomenagasix.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/pdf_fillable_form_data_in_fields_disappear.pdf
    • https://cdn.shopify.com/s/files/1/0434/8107/1782/files/femifof.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/91263863823.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78985131446.pdf
    • https://cdn.shopify.com/s/files/1/0440/6539/0757/files/32764314742.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/74966144055.pdf
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/15004861024.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2666/files/31724255702.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/kenmore_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/lovogojeronetexapusu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/zafupidazebimu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/vutunuxogamixaba.pdf
    • https://cdn.shopify.com/s/files/1/0437/8080/0663/files/jerikewigala.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/tilutuxusovinunixejikox.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_off0000941b.bin
24a67a1f00e6b113f19296e3778b0d1a7b9d50b600e78a12d1633eb826f70b85
pdf-font-stream PDF embedded font (sfnt) at offset 0x941B 4824 bytes
font_01_sfnt_off0000a4b1.bin
a46a21f8dfc9bf2253a030ede2121218e3a02e0566d67bf4765434a2c5d6c5c0
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B1 11072 bytes