Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d1dbc08dbf91f42…

MALICIOUS

PDF

43.6 KB Created: 2020-08-01 02:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b1a4a266ef9ffbe0bdf0d9516967a07 SHA-1: de402d5f0607c0652d7b0c5f28f9cf484745595b SHA-256: 7d1dbc08dbf91f42e2f9b4bd6f0f3d07fac797f1c123b1f9f37ac8a29f45ff43
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc' with a keyword suggesting illicit content. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily garbled, contains the same malicious URL. The primary intent appears to be redirecting the user to malicious infrastructure.

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=suicid%25C3%25A9+squad+torrent
    • http://files.kristinrmt.ca/uploads/1/3/0/9/130969818/02ce43c79a87a.pdf
    • http://files.ckemployeeportal.com/uploads/1/3/1/3/131383943/4276487.pdf
    • http://files.mygentlebeginnings.com/uploads/1/3/2/7/132740424/9403006.pdf
    • http://files.ancestral-pathways.com/uploads/1/3/1/4/131453188/savaxeruzuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/nazitelav.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/92502894497.pdf
    • https://cdn.shopify.com/s/files/1/0434/6337/7048/files/3659127674.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/liwitudobuxobamarodotesux.pdf
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/dadoxawagerodogopejajonav.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4481/files/76743598555.pdf
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/tabupuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/5592/3878/files/giant_soul_sorcerer_5e.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/kukojav.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0374/files/65339203437.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2932/files/fizolawutatatilopizuwuba.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://bit.ly/2t8YwsdSERVER
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055a8.bin
fa16c19463c2d898290260d2149416925940d4228983d1e5424587ad2d00f73a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A8 5272 bytes
font_01_sfnt_off00006756.bin
88b91f6bd91556c649d3e22356a7578f33060d8f62ee6e04b99e52719eb3dfe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6756 10288 bytes
font_02_sfnt_off00008aa9.bin
89498c5ae7adc0dcab6b62eb765d682c9ffdf1ab0127780e1186b0b00e602b38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA9 16112 bytes

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