Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa0222362fc9aa7…

MALICIOUS

PDF

41.3 KB Created: 2020-08-23 23:22:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bcbb983c7c8b2f0c077fb03d88e0796 SHA-1: 326067cedaf2b711973e6432fbaea65bc375f5b4 SHA-256: 4aa0222362fc9aa7366e01f81daeb1f98f860b04d63fe981aff5235e44f12d8e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com domains, but one critical link redirects to ttraff.com, a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Best android mobile phones below 3000' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary attack pattern involves social engineering through a deceptive 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=best+android+mobile+phones+below+3000
    • http://files.sbcopywriting.com/uploads/1/3/2/7/132740218/644292.pdf
    • http://files.rajpurohit-lab.org/uploads/1/3/1/0/131070612/187700.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3416/files/neopets_food_club.pdf
    • https://cdn.shopify.com/s/files/1/0434/7920/3992/files/canada_passport_application_form_renewal.pdf
    • https://cdn.shopify.com/s/files/1/0430/5652/9565/files/38714593061.pdf
    • https://cdn.shopify.com/s/files/1/0428/9055/9655/files/dibelixokofigefibivuxanu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/gikaxumirefipederibut.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/wamekaferebadorobiwuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9445/0078/files/lumodovilomogiledok.pdf
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/varufuzulusubutuza.pdf
    • https://cdn.shopify.com/s/files/1/0435/1036/6362/files/gudekonoxivabifananawi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/181300170.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3087/files/7523665803.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/zikizobodeta.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/jejejolarexisowawefoj.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_off000061dd.bin
b6a2e3c316e8b84443d931a594adfa82f916449c8eda7e84dfd8781c95731be8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61DD 5788 bytes
font_01_sfnt_off00007568.bin
d1ec548052da01037b2983081f69d13b9e72835c9a8be2fcee531a2760126a2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7568 10172 bytes

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