Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4a15e9d65293c3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 19:21:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74d971a74ad8653678f0e162c4ebb85f SHA-1: ec47a1627de14560ee1e044b95afb75412017499 SHA-256: 9e4a15e9d65293c385325858b9f704f8a0ea282b16901627429878faa0ded364
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'analysis of variance tutorial pdf' and a URL that appears to be a lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms that the link at https://ttraff.com/pify?keyword=analysis+of+variance+tutorial+pdf leads to known malicious infrastructure.

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=analysis+of+variance+tutorial+pdf
    • http://files.urbandesignmentalhealth.com/uploads/1/3/0/7/130775747/04da9a3318c5.pdf
    • http://files.wingecarribeehealthassociationformen.org/uploads/1/3/1/3/131381464/nifal_kikis_burutuv.pdf
    • http://ruvezixot.sangamoncountyswcd.com/uploads/1/3/1/6/131607062/7037984.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/pdf_to_word_converter_free_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26160609228.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/yanmar_diesel_engine_parts_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/95745862674.pdf
    • https://cdn.shopify.com/s/files/1/0434/2156/5084/files/dipoketaxuwotuvoguzip.pdf
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/nulovixa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/chinese_calligraphy_practice_sheets_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/1913/1285/files/lexuwibavegekiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/3416/2853/files/biogas_project_for_college.pdf
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/zigatafifojukubuga.pdf
    • https://cdn.shopify.com/s/files/1/0428/8996/9820/files/advantages_and_disadvantages_of_computer_technology_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7959/files/78772925498.pdf
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/aerial_yoga_exercises.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_off0000686b.bin
7d68b79f64fddfe73fd402f682c5701cedf358141a9ec46daa2715d09ccae4ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x686B 5300 bytes
font_01_sfnt_off00007a98.bin
f7a5104e43d71653b4300612b83631b1fbd3608d85c35af9ec6a09e28072aa5f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A98 10440 bytes