Malicious PDF — malware analysis report

Static analysis result for SHA-256 df281c391a2daab6…

MALICIOUS

PDF

47.9 KB Created: 2020-08-09 05:06:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a49b314abcf12ee01c5dc0673a75072a SHA-1: 387aaed5c728052723b63305f335046ad2a2361c SHA-256: df281c391a2daab61dec49dbf685f889e23b10d08663a1cf6c4b80d6fc6494b2
150 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/pify?keyword=raci+matrix+project+management+pdf'. This URL is embedded within the document body, disguised as a legitimate document. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=raci+matrix+project+management+pdf
    • http://wemobu.kofc4924.com/uploads/1/3/0/9/130969465/lixosowelaz.pdf
    • http://tejax.nrt-ias.org/uploads/1/3/1/4/131437615/2f0bfe23.pdf
    • http://files.permacultureinschools.com/uploads/1/3/2/6/132696483/5362023.pdf
    • http://files.britishcolumbiaschoolactsection177.ca/uploads/1/3/1/0/131071164/47c5a1fc2a.pdf
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/nagajuxetivolutux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kekesapenogetiru.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4050/files/how_to_analyse_company_balance_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/5255/4657/files/puxigakuvipuxisifufivebif.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/tewarubozivujus.pdf
    • https://cdn.shopify.com/s/files/1/0435/7357/5841/files/62309703241.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4664/files/jelunofuluzes.pdf
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/bojupubesomuvemavevogo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7405/9430/files/datadazagixajiniwipafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewobaropelizovijekozuji.pdf
    • https://cdn.shopify.com/s/files/1/0454/6841/8206/files/acs_analytical_chemistry_practice_exam.pdf
    • https://cdn.shopify.com/s/files/1/0437/7726/1729/files/lean_bulking_workout.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/gesuzewate.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_off00007b3d.bin
bcaadb3dc593353db61ec9053d33d65e65f6692b8e1e249338b1e079c67d72ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3D 5416 bytes
font_01_sfnt_off00008da8.bin
f7e611a9f70655edcae3f0f794e93e04791e8d9cfcfbf11f81442dd7c9f8b892
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA8 10388 bytes