Malicious PDF — malware analysis report

Static analysis result for SHA-256 97e982103dd34334…

MALICIOUS

PDF

44.1 KB Created: 2020-08-20 04:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a05bdcbdb5ed9c9c69c9e57b022274b2 SHA-1: 8a6a7480a6b42603739363eeb67329e1302c4d8c SHA-256: 97e982103dd34334a8143a445f8e3fea5ecc5981b4bf1fbfe1d966becdaae0a8
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to other PDF files hosted on various domains, indicating a link farm. One prominent URL, 'https://ttraff.cc/pify?keyword=engineering+technology+practical+guide', is flagged as a malicious redirector. This suggests the document is part of a scheme to distribute malicious content or manipulate search engine results, rather than providing legitimate information.

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.cc/pify?keyword=engineering+technology+practical+guide
    • http://files.talltalegaming.com/uploads/1/3/0/8/130873820/wozexiv.pdf
    • http://files.montoyaenglish.com/uploads/1/3/2/6/132681378/6450283.pdf
    • http://sojejuso.rowlettramblings.com/uploads/1/3/1/4/131438641/zubox.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/aisin_water_pump.pdf
    • https://cdn.shopify.com/s/files/1/0439/2304/6555/files/61863245553.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29025511016.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/45573726844.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1606/files/devijuwevalamefolak.pdf
    • https://cdn.shopify.com/s/files/1/0432/2574/3515/files/wovawe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3419/files/revakimefewimuwusasebo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4815/files/91062217093.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buxigol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/zitezawigomarororakak.pdf
    • https://cdn.shopify.com/s/files/1/0437/5560/2078/files/58689848602.pdf
    • https://cdn.shopify.com/s/files/1/0429/7962/3071/files/23449549755.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/58728983585.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_off00006df1.bin
88b7abfd341659a89a0cdb5c23dddc9c98add9e3305bdacdceb3a3ba5c01bcb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF1 5216 bytes
font_01_sfnt_off00007fa8.bin
dce53c7d53a2976a2d38d8ba7010ac9119ed7f01d10eb98fe22ee40b7293ac46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA8 10256 bytes

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