Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed20cfea5b3c2de9…

MALICIOUS

PDF

61.0 KB Created: 2020-08-01 10:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91b73f14b9fce211d7f7cbbcd96ced44 SHA-1: a62f70055e81eb5b1ea8dd1f1f078c22023bcd4f SHA-256: ed20cfea5b3c2de9de62161edabd0c710b5e3c1f78495937fd51e3a3ecec872e
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 one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs that are likely part of a link farm or redirection scheme. The primary malicious link identified is https://ttraff.cc/pify?keyword=python+string+split, which is a known redirector.

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=python+string+split
    • http://files.phoneangelrepair.com/uploads/1/3/0/7/130775856/tosalajanag-vijiwobuto.pdf
    • http://files.danielmarkbutler.com/uploads/1/3/2/3/132303317/75a82db43a1.pdf
    • http://files.idealhome.services/uploads/1/3/1/4/131454012/5948916.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0432/2561/2450/files/21052372035.pdf
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/41542563351.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/tigarivilelodutiliwiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6503/files/94399250471.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
    • https://cdn.shopify.com/s/files/1/0435/2878/1988/files/sonigigeponikedomejemajo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdf
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/22226392610.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/antimicrobial_agents.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_off0000a4e5.bin
5d332498d070b7e5b58c7f513b4859e701e3aac4b492abc0f5c4e919a9b214bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E5 4972 bytes
font_01_sfnt_off0000b5d7.bin
c82ca615961efb0adb02819a1bfa1bd1cab19f948bfae526ab7460bf52413fb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D7 15984 bytes

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