Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80a42c856e2d6a7…

MALICIOUS

PDF

54.5 KB Created: 2020-07-29 07:56:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d2c04c2984d3633d470ae0815b07163 SHA-1: 75865441cdadbc3325d7743194e150c2cf10fdd1 SHA-256: c80a42c856e2d6a71bd8824cc749a16bd3192871d475f7ada6c2d2cbf3536086
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'The blind side trailer', suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages.

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=the+blind+side+trailer
    • http://files.bambooble.com/uploads/1/3/0/8/130814611/faxowafun.pdf
    • http://files.merriteaseandmaud.com/uploads/1/3/1/4/131483275/6206654.pdf
    • http://files.belkirk520.com/uploads/1/3/1/8/131871605/jekuwunu-jiguzotidaw-gapigukujizesur-netujesununo.pdf
    • http://files.hannahbowtiful.com/uploads/1/3/1/4/131437766/pikuje.pdf
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/serivuxepe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fisebupujavilugux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67062005494.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/31830193507.pdf
    • https://cdn.shopify.com/s/files/1/0433/5344/0414/files/86761221657.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/12078444116.pdf
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/sanek.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/79419683571.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1146/files/65328225472.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_off0000984d.bin
09908ef3455a67f601303ac7f77eac34caa8ead7943233d11c99ec391cf81f80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984D 4680 bytes
font_01_sfnt_off0000a80f.bin
30c9aa19db4b79cccd97168f6f0c2c27f49d5b100eaf6dd693c85a85ab8bcea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA80F 10976 bytes

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