Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d020ff16f94286b…

MALICIOUS

PDF

41.6 KB Created: 2020-08-22 06:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8927649152fe4bf1a57e703d3ec2f2ca SHA-1: 8905b10538a4b5b3e1723dd7e10229e2aca63862 SHA-256: 2d020ff16f94286bb5a5103e87f66dd19ec8b3efcc2c6a8a45b28535125e4594
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM indicates a mass of external links, with the primary one being a redirector. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=command+prompt+font+free', is the most critical IOC, as it is the initial lure. The file likely serves as a lure to redirect users to malicious content.

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=command+prompt+font+free
    • http://lovunu.neilkatzconsulting.com/uploads/1/3/1/3/131383483/4604593.pdf
    • http://files.abnormalhunter.com/uploads/1/3/0/9/130969790/6974571.pdf
    • http://files.sacredcircleholistichealing.com/uploads/1/3/1/4/131437423/474ea49440f.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/wefotujejutikoxir.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/38560060847.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5274/files/95866764116.pdf
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/tozepuxurixezawi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/sazonefelanefaz.pdf
    • https://cdn.shopify.com/s/files/1/0451/4856/9754/files/caterpillar_diesel_engine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/75906848773.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9667/files/aneurisma_cerebral_sintomas_y_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/79655835919.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_off000065ef.bin
6f6ea6d862d03a807e7900f6e89372ac5c0525140f86f8e7083ac0dc84c1e938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 4880 bytes
font_01_sfnt_off0000766b.bin
875d932fb03abdb034173e195731f371bcc25e1e626a2ad78c96b4b0d087fdb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x766B 10420 bytes

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