Malicious PDF — malware analysis report

Static analysis result for SHA-256 f326c35f581683bd…

MALICIOUS

PDF

47.6 KB Created: 2020-08-25 05:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3e4a7691b02be298f31bbe4b60a615d SHA-1: 36a4b43998ff6de2d8f72e5ed177cccb11cabc5d SHA-256: f326c35f581683bd43ed171ffa3db8ff5719f962842482688d3033d7ba6f58b3
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a 'camping guide' and the malicious URL, suggesting a lure. The PDF also contains a large number of embedded links, many hosted on Shopify, which is characteristic of SEO-based link farms used to obscure malicious destinations. The primary malicious URL is 'https://ttraff.com/pify?keyword=upper+peninsula+camping+guide'.

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=upper+peninsula+camping+guide
    • http://files.cdafestival.com/uploads/1/3/1/3/131378993/ripukogune.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/capsaicina_beneficios.pdf
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/zimibogiwimokavubu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5660/9957/files/13717272036.pdf
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/kuwarimufibuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1623/files/2159965787.pdf
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/sapusidegekoteku.pdf
    • https://cdn.shopify.com/s/files/1/0435/6676/0095/files/42458943661.pdf
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/37882562151.pdf
    • https://cdn.shopify.com/s/files/1/0436/9560/3862/files/tp_acidimetrie.pdf
    • https://cdn.shopify.com/s/files/1/0439/1842/6267/files/administrao_e_gesto_hospitalar.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_off00007c38.bin
f9f82ea656f3a7989d6800efb604c027913619df018f769c4c361b7714c41b5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C38 5384 bytes
font_01_sfnt_off00008e65.bin
2ddb8e68684c5ff2b37676780e95f1ca5ccd1022e15ceea4607c612b105d7699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E65 10352 bytes

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