Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1aa9bbd3608efa1…

MALICIOUS

PDF

41.8 KB Created: 2020-08-30 19:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8de384b1b0f5c298307ad49de95b8df6 SHA-1: 3be593c638643176cb85ef243cee01fa2138aefa SHA-256: b1aa9bbd3608efa15e7c1ae341ede59d9cf47c32f992109a75976d0b11bbd572
120 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 'https://ttraff.cc/wix?keyword=11+x+17+gate+fold+brochure+template'. This URL is presented within the document body, disguised as a brochure template, indicating a social engineering lure. The PDF also contains a link farm heuristic, with numerous links to Shopify-hosted PDFs, though most of these appear benign. The primary malicious URL is the most significant IOC.

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.cc/wix?keyword=11+x+17+gate+fold+brochure+template
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/51820791809.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/41691792575.pdf
    • https://cdn.shopify.com/s/files/1/0459/7225/8983/files/travel_expenses_form_template.pdf
    • https://static.usrfiles.com/ugd/b8c837_fae9ca00ce134c25baf418245a62528c.pdf
    • https://static.usrfiles.com/ugd/79cb75_03b16075a32e4adf8390094b9857857f.pdf
    • https://static.usrfiles.com/ugd/6a7407_f0b0036d9b3045bcb6a88b43fd977ce9.pdf
    • https://static.usrfiles.com/ugd/0aab01_4dc14fc0acad4971b572543156e06d9d.pdf
    • https://cdn.shopify.com/s/files/1/0428/2220/5607/files/jenarexetepazisuvira.pdf
    • https://cdn.shopify.com/s/files/1/0433/9813/5966/files/lofadimenegim.pdf
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/technological_innovation_in_immunology.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/43828676693.pdf
    • https://static.usrfiles.com/ugd/0c4177_48f8c8c7a0344392aa6bb236e046bae2.pdf
    • https://static.usrfiles.com/ugd/299074_39f5ef6490e34f1f9ae4e9a5891f4fc2.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/
    • https://cdn.shopify.com/s/files/1/0459/7225/8983/files/travel_expense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634e.bin
654335c5d5166460aa6cb5319d5b0040b197e0ba39caae1196720790f096cbb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634E 5636 bytes
font_01_sfnt_off00007665.bin
3643f42be826dee6e35b1a910559b391406475307b0168bbd11761f80bc024cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 10392 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.