Malicious PDF — malware analysis report

Static analysis result for SHA-256 be48bd21cdc1755a…

MALICIOUS

PDF

40.0 KB Created: 2020-08-13 22:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4893e805450e2c152baa9e2873c8f9e7 SHA-1: 0e59a5f237123f59a077933e9b62a14d340a5954 SHA-256: be48bd21cdc1755af50b2b4c7c98f09e7ea53b0c31cdb1f17407d86cb202fdf6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Google spreadsheet inventory management'. The primary malicious URL identified is https://ttraff.com/pify?keyword=google+spreadsheet+inventory+management, which likely serves as the initial point of compromise.

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=google+spreadsheet+inventory+management
    • http://motozubex.phenixid.com/uploads/1/3/1/4/131453870/lemotosir.pdf
    • http://files.againstthegrain88.com/uploads/1/3/1/4/131453086/9214820.pdf
    • http://files.missiontriptraining.com/uploads/1/3/2/6/132695663/dijodavug_jipofafegujoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/56446938201.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/wuzirinefokobojutogitav.pdf
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/66928789369.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/53193241757.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/31826733801.pdf
    • https://cdn.shopify.com/s/files/1/0430/7409/3217/files/76157060460.pdf
    • https://cdn.shopify.com/s/files/1/0430/9791/5545/files/86697512926.pdf
    • https://cdn.shopify.com/s/files/1/0428/5507/1900/files/4163207488.pdf
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/safefubexaxerukewupow.pdf
    • https://cdn.shopify.com/s/files/1/0437/3463/0554/files/free_english_speaking_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/assessments_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2095/files/lixuwi.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_off00005e9d.bin
39337e46b9361cbb5da6f4ee108d35fe554399367f699572a17f54337763a8b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9D 5564 bytes
font_01_sfnt_off0000716c.bin
5f4161cf1600058575f240133692cfeb899a423a320582efd036fc76d4dad222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x716C 9832 bytes

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