Malicious PDF — malware analysis report

Static analysis result for SHA-256 93abc11b5988b660…

MALICIOUS

PDF

53.0 KB Created: 2020-08-20 10:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77b8860241a606b635828399ff20807a SHA-1: 4946de5ad3a83db083c3117fdf306e28bf994a33 SHA-256: 93abc11b5988b660e9eff1c96667c22c4bdda111bce3583aee2d99d87eb50d33
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body and metadata suggest a lure related to 'html to pdf' tools, which is likely a pretext to drive users to malicious sites. The primary malicious IOC is the ttraff.cc redirector, which is likely used to obscure the final destination of the attack, potentially for phishing or malware delivery.

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=html+to+pdf+php+fpdf
    • http://files.guillome.nl/uploads/1/3/0/7/130739401/5772c9.pdf
    • http://poguta.sgag-online.com/uploads/1/3/1/4/131453850/043d197.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zudofujavulasosajawigubi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/sample_project_scope_statement.pdf
    • https://cdn.shopify.com/s/files/1/0434/7808/9878/files/certificate_design_templates_powerpoint.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/fusadibidulo.pdf
    • https://cdn.shopify.com/s/files/1/0440/1571/4469/files/84763545565.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/gepufenapobowudedi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/analisis_y_diseo_de_sistemas_de_informacion_james_senn.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/44218113571.pdf
    • https://cdn.shopify.com/s/files/1/0443/4133/0076/files/helping_verbs_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/laughs_in_british_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4832/files/adverbs_of_time_board_game.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_off00007fc1.bin
05698ab9827f62762d8aee893a67e98b0f70b69bf516292e1a6346f51739d856		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC1 4760 bytes
font_01_sfnt_off00008fd3.bin
888a1d58c6d818aa54817e6963ff1c2781b0c4b56bbf0b65d98d87f9015ea962		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD3 18324 bytes

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