Malicious PDF — malware analysis report

Static analysis result for SHA-256 c93ad00b694227f3…

MALICIOUS

PDF

44.2 KB Created: 2020-08-22 12:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64e00e092f027251c2302c5f4b273642 SHA-1: ab62dbcbed4f65eb27ffda4406c6083537f0c1e2 SHA-256: c93ad00b694227f3d767381b3b01917d8ace95067a1e881b3b7256cd89a4ea4d
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 domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the phrase "Esic accident report form no 12", suggesting a lure to trick users into clicking the malicious link. The primary malicious URL is https://ttraff.ru/pify?keyword=esic+accident+report+form+no+12.

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.ru/pify?keyword=esic+accident+report+form+no+12
    • http://pasoret.masakoonodera.com/uploads/1/3/1/4/131437508/3844423.pdf
    • http://jetaw.roseaboveartdesigns.com/uploads/1/3/1/3/131380181/vuwukanakak_fafewetafu.pdf
    • http://files.sarasotaveteranscommission.com/uploads/1/3/1/4/131437493/gogefo.pdf
    • http://files.mylenebaxterconsulting.com/uploads/1/3/0/7/130740517/demux_nafiwiwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/70112193859.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/wuteragaralusenikug.pdf
    • https://cdn.shopify.com/s/files/1/0433/8771/5742/files/87650675471.pdf
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/jezesiverugetutakid.pdf
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/febefiniwuxuk.pdf
    • https://cdn.shopify.com/s/files/1/0440/1322/4094/files/73069966179.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/20704370315.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/98639164556.pdf
    • https://cdn.shopify.com/s/files/1/0431/2979/8818/files/speaking_activities_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2504/6423/files/socioeconomic_status_and_academic_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/pirovetujikulek.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/24938510384.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ae2.bin
44f1fbc0d126db4c3d3f2e4624eb6f679e4e02d6e7eced8cee50739affb10729
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE2 5412 bytes
font_01_sfnt_off00006d31.bin
444414a5a3f55941b47fd8eb511dfa5cd50174f75ea89b20ad44b6645bfbb8f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D31 9900 bytes
font_02_sfnt_off00008f36.bin
5d72d630640305d452d914085fd6c65e0d8125198bed8028c282d44fd0327be8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F36 16068 bytes