Malicious PDF — malware analysis report

Static analysis result for SHA-256 9327458e845eabfc…

MALICIOUS

PDF

65.7 KB Created: 2020-08-07 19:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aaac45496930de9d4796b34ea970bf45 SHA-1: 49f14fc44d6efdd4903d34b3fd80b728a4f7de15 SHA-256: 9327458e845eabfcf6fad4fae076b251827467aa2e60bff3413b2dff466199e5
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to a malicious site. The presence of numerous PDF links indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

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.com/pify?keyword=approaches+to+risk+management+pdf
    • http://files.atreeanditsfruit.com/uploads/1/3/0/8/130874369/basebusizi_xovulevuwawuteg.pdf
    • http://files.eccai.ca/uploads/1/3/2/7/132740586/boxog-bokitebizaro-nirosenisaminow-ranemebaworefu.pdf
    • http://files.onpointsharp.com/uploads/1/3/0/8/130874110/5084833.pdf
    • http://kateke.bubbleandmimilimited.com/uploads/1/3/1/4/131452883/23d4b19bccd38.pdf
    • http://files.sycamorecreekfarms.com/uploads/1/3/0/8/130874125/e1c0146.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/95042716511.pdf
    • https://cdn.shopify.com/s/files/1/0437/3712/0933/files/pazita.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/95378183431.pdf
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/isometric_exercise_for_neck.pdf
    • https://cdn.shopify.com/s/files/1/0433/0602/5128/files/98993956886.pdf
    • https://cdn.shopify.com/s/files/1/0433/8388/1893/files/xozupole.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/53973983731.pdf
    • https://cdn.shopify.com/s/files/1/0428/2023/9519/files/dasunasejogaxowow.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/fezuserigoxuragojebajabo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8792/1313/files/sound_absorbing_materials_zwikker.pdf
    • https://cdn.shopify.com/s/files/1/0439/4975/2478/files/65019841711.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/13188954643.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_off0000c30d.bin
a844d97921df125f1a00f9dbeaffd03d4b320cea435f90bad7a2e68f4247f203		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC30D 5588 bytes
font_01_sfnt_off0000d5e1.bin
8c14cb4e703c21ad7c5e246fc2048a479913db80c0daaaf075b3c97813480f9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E1 10452 bytes

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