Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a86cb6573be455…

MALICIOUS

PDF

44.3 KB Created: 2020-08-24 02:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d915e2c7cc96a0650e1ee8d09d387b4 SHA-1: a2d03fde282c7f3d6a263c4aa069e16a706421f0 SHA-256: 82a86cb6573be455dd3500c302b2039bdc2ece4f998d953a3953af0a2382c5b0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with 30 links identified as part of a link farm. One critical heuristic firing indicates that these links point to a known malicious redirector infrastructure, specifically 'ttraff.ru'. While many other links point to Shopify domains, their sheer volume and the presence of the redirector suggest a malicious intent to lure users to harmful content. No scripts were extracted from this sample.

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=o+alienista+hq
    • http://files.rabbitholerealestate.com/uploads/1/3/2/6/132681316/relituruvufarimukox.pdf
    • http://xikafi.pietropolitano.com/uploads/1/3/0/7/130739059/5299836.pdf
    • http://files.rubiis.com/uploads/1/3/1/3/131379894/3562985.pdf
    • http://wumomiwad.keywestrickburnett.com/uploads/1/3/1/3/131380550/bivajolonifirib.pdf
    • https://cdn.shopify.com/s/files/1/0431/4827/9957/files/64535177251.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/asmedia_usb3._1_driver.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/kikosuki.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/fuvesevevomax.pdf
    • https://cdn.shopify.com/s/files/1/0433/3282/9342/files/xudidilewijulolane.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/business_plan_proposal_examples.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/openstax_calculus_volume_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/tikalisogixonumavila.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/guxikuvowawesipujomito.pdf
    • https://cdn.shopify.com/s/files/1/0438/2110/5309/files/38929123422.pdf
    • https://cdn.shopify.com/s/files/1/0440/1761/4998/files/comma_in_complex_sentence_worksheet.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_off00007198.bin
e694139ed330f3ad3504917a4e3fe18b7e22494fe101d46b7b533191eade4423		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7198 4828 bytes
font_01_sfnt_off00008208.bin
844c505e4828989037b7e182a77b6ee731b94bb0c108cfcb0fc74d532b17320b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8208 10136 bytes

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