Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59b40b862f3e493…

MALICIOUS

PDF

55.4 KB Created: 2020-08-17 07:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2c41dcbd322aabbef053354a1041d55 SHA-1: 5b144e4d940d76a48fc836d269b89fa51d9002fc SHA-256: b59b40b862f3e4931a067e1ee48e4a433fb08a5ad5ebd49ab5b291af1aded114
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and numerous other links to Shopify domains, suggesting a link farm or redirection strategy. The primary attack pattern is a lure to a malicious redirector, likely for further payload delivery or phishing. No scripts were extracted from this sample.

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=template+for+video+game+script
    • http://files.agathafashion.shop/uploads/1/3/0/9/130969375/9654079.pdf
    • http://files.brentwoodpetresort.net/uploads/1/3/1/4/131408798/fonefipulapibos.pdf
    • http://files.marziaclinic.si/uploads/1/3/0/7/130738819/7311033.pdf
    • http://files.napavalleybasketballdevelopment.org/uploads/1/3/0/8/130814393/padirekegafazi-mopudutanosa.pdf
    • http://nejuma.accessphenomenance.com/uploads/1/3/1/0/131070317/rexonejepu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/88671589917.pdf
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/bavovejonuxenolilisug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/4002/files/15606709207.pdf
    • https://cdn.shopify.com/s/files/1/0439/4139/6638/files/menawitifa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65925238695.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7238/files/jowutakodijuju.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/janirikijan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2635/files/33768113806.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/46743825931.pdf
    • https://cdn.shopify.com/s/files/1/0430/6580/2903/files/21011102331.pdf
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/duxuzubinokijup.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_off00009939.bin
5f2c6ef2395df43b1727964dde7a0a8b29eb387663e7d07d4259fd42804e08f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9939 5484 bytes
font_01_sfnt_off0000abd4.bin
cba595de02fd750a2dc9649e7b89c6036dbb8d284c7254f2f7b8270f4fdc468f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABD4 10800 bytes

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