Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb3ebcf1e87dd53f…

MALICIOUS

PDF

49.2 KB Created: 2020-08-10 07:56:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c218b79ad893f35b601186d1af2e9e6 SHA-1: f8a1fbbda7057f269a7b056e0d002676b3974b8a SHA-256: bb3ebcf1e87dd53fee45be130ac2875c18d22209e4df47d0811f3e0e2f90ab6a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=abolishing+performance+appraisals+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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/pify?keyword=abolishing+performance+appraisals+pdf
    • http://files.covenantsuccession.com/uploads/1/3/2/7/132740405/rireja.pdf
    • http://fegobuwi.chrislchristoff.com/uploads/1/3/0/9/130969204/zideb.pdf
    • http://files.adirondack90miler.com/uploads/1/3/1/3/131379111/7133730.pdf
    • http://jixefa.longviewarcsociety.com/uploads/1/3/1/4/131437987/020bcf1ef94526b.pdf
    • http://gesoko.studionailsbridgwater.com/uploads/1/3/0/7/130740025/777034.pdf
    • https://cdn.shopify.com/s/files/1/0437/3312/3221/files/4099994945.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/kelubefewo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/rabomesosulogizaxato.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/2002_honda_civic_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/christmas_band_music.pdf
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/15738058651.pdf
    • https://cdn.shopify.com/s/files/1/0432/2462/9411/files/87075292901.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/data_analysis_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/6158/2755/files/divamujuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8675/files/momejigogidul.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_off0000826e.bin
9608f6470fa6c9806d74ae5202cc1305fd39629615028a97a861b37d2e8d82a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x826E 5700 bytes
font_01_sfnt_off000095a1.bin
45012a393ad58793fde2c0a0ff39c07edcb1215d24bfc1366dead870200827af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A1 10088 bytes

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