Malicious PDF — malware analysis report

Static analysis result for SHA-256 226611f8235cf6e6…

MALICIOUS

PDF

44.2 KB Created: 2020-08-11 20:20:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10407fec463a51f73ae3a171b24db362 SHA-1: eb8d8925f3cfbf11f6b364b8506a4892ccd3d544 SHA-256: 226611f8235cf6e65054d0c094c2f5ab676bc75e6645d21c7c2285216a86eaad
160 Risk Score

Malware Insights

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

The PDF contains a deceptive message and multiple embedded links, including one pointing to known malicious redirector infrastructure. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick the user into performing an action, such as installing a browser extension, which is a common social engineering tactic. The presence of a link farm further suggests an attempt to distribute malicious content or engage in SEO poisoning.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=error+bookmark+not+defined+word+to+pdf
    • http://files.bestsaletoyota.com/uploads/1/3/2/6/132681477/dojezu.pdf
    • http://files.medeiros-hui.com/uploads/1/3/0/8/130873708/dowero-kamegajopaxaxak-moter-zixojat.pdf
    • http://xaxum.finallylivingthedream.com/uploads/1/3/0/7/130738531/debux.pdf
    • http://tilaruxa.customizedt.com/uploads/1/3/1/6/131606289/403b7fa670a8bc0.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/mukuxelipakinotugevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/45717257505.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3163/files/lunutewanizi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/76281190832.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/tranexamic_acid_mechanism_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/las_bienaventuranzas_anselm_grun.pdf
    • https://cdn.shopify.com/s/files/1/0453/2423/9003/files/ias_mathematics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/convert_file_to_word_document_using_adobe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5409/6806/files/fulibenapon.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/fabisoxidanupivimuxal.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8679/files/newijojukozu.pdf
    • https://cdn.shopify.com/s/files/1/0446/0806/1604/files/arrhythmia_treatment_guidelines.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_off00006ee7.bin
09de67f58efe6bb8ba1587ce63d71855d288b9f2bdc03d348f8afc9711bb343f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE7 5228 bytes
font_01_sfnt_off000080ae.bin
67ca6040b1dc0bcfc0db2a178e0829155f69123cb1c24346d8e0685247877906
pdf-font-stream PDF embedded font (sfnt) at offset 0x80AE 10360 bytes