Malicious PDF — malware analysis report

Static analysis result for SHA-256 5641fd66a66a9bb0…

MALICIOUS

PDF

42.6 KB Created: 2020-08-20 06:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0182004aeeceb771543270d8089f00f8 SHA-1: 7a8df5d3e82f536b4a166ec58071c46d8f68c972 SHA-256: 5641fd66a66a9bb06a111cd65ce540a6c49becba0f03c6c28f635bd417736e54
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=cbr1000rr+2008+service+manual'. The document body, though heavily obfuscated, contains text suggesting it is a service manual, which is likely a lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. 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.ru/pify?keyword=cbr1000rr+2008+service+manual
    • http://files.aforcapacity.org/uploads/1/3/1/8/131856700/mimuxuzopev.pdf
    • https://cdn.shopify.com/s/files/1/0435/1790/3008/files/74561073015.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/80984065369.pdf
    • https://cdn.shopify.com/s/files/1/0437/8247/1837/files/53388971358.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98012128422.pdf
    • https://cdn.shopify.com/s/files/1/0432/9937/3214/files/aircraft_accident_investigation_book.pdf
    • https://cdn.shopify.com/s/files/1/0463/1940/3165/files/aston_martin_vantage_v12s_manual_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/57038671904.pdf
    • https://cdn.shopify.com/s/files/1/0444/0604/6886/files/dijubapovofad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/77887310452.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0439/0384/4520/files/newojabagukepotekutofu.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_off00005d06.bin
158cf9a0177803928f756c209459d69a9f728f260c61b1de9f76b8c399ade0fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D06 5568 bytes
font_01_sfnt_off00006fe4.bin
ddbb74db11cbb938630670bbdafae21684f4fadbe3679115bf577a43286035c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE4 14064 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.