Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f834718e3a8a6fc…

MALICIOUS

PDF

39.7 KB Created: 2020-08-19 07:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f8043cd4c0408caf5f8c33a612d5f37 SHA-1: 404a994387eb490807fb6a428ef65d48b2be92ca SHA-256: 4f834718e3a8a6fc64634e5f144019f8a9766c2aa598c2148cde0c7b253e4af6
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a "Doj eeo reporting tool". The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which point to Shopify domains. The primary malicious link is the redirector, which likely leads to further malicious content or phishing pages.

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=doj+eeo+reporting+tool
    • http://files.nicholaspessarra.com/uploads/1/3/0/9/130969312/vivawos-xubuvikigina-nakato.pdf
    • http://files.stagerockperformancehorses.com/uploads/1/3/1/4/131409761/1446147.pdf
    • http://files.shepardbusinesspark.com/uploads/1/3/0/8/130814208/9272012.pdf
    • http://dixogeg.brentwoodmochamber.com/uploads/1/3/0/8/130814328/63841c334a.pdf
    • https://cdn.shopify.com/s/files/1/0447/9077/5965/files/genisof.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/pokawowitelimanefapagazi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/algorithme_cours_debutant.pdf
    • https://cdn.shopify.com/s/files/1/0433/0058/5625/files/persona_q_rom.pdf
    • https://cdn.shopify.com/s/files/1/0437/7634/4225/files/10088493032.pdf
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/25221448034.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/92517158602.pdf
    • https://cdn.shopify.com/s/files/1/0440/6149/1365/files/bash_prompt_for_input.pdf
    • https://cdn.shopify.com/s/files/1/0439/1862/2875/files/pumping_and_aerial_apparatus_driver_operator_handbook.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_off0000607e.bin
35b1eb10e5c00496d08f56fc280c8c38784412631be59e1cd6a059ed30114bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607E 4672 bytes
font_01_sfnt_off00007088.bin
7700a0f6bfac0914d812baf7f375f05a8fd7b36af200417835d48e6b3be446f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7088 10012 bytes

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