Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8cc9a894af21269…

MALICIOUS

PDF

42.7 KB Created: 2020-08-04 08:11:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46a4e7777cb5aadaec3a9aaa0a67b9bd SHA-1: 4e1e5e295583561a3ac1a680e975ba30b18ce82f SHA-256: c8cc9a894af21269a1d68f5a42a7e3cde047f32b037527c2b20e5607eefd629f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=how+to+translate+arabic+pdf+file+into+english'. This URL is part of a link farm designed to manipulate search engine results and likely leads to further malicious content. The document body, though heavily obfuscated, contains references to translation and the malicious URL, reinforcing the lure. The presence of numerous external PDF links, many hosted on Shopify, further indicates a SEO-based distribution tactic.

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=how+to+translate+arabic+pdf+file+into+english
    • http://files.severnaparkphysicaltherapy.com/uploads/1/3/0/8/130813108/2538103.pdf
    • http://files.countrysidechurchseminole.com/uploads/1/3/1/3/131379828/wifavurebinir-fumubet-lagodivomoli.pdf
    • http://files.monroesportsmansclub.com/uploads/1/3/1/3/131380870/delilemiwutok.pdf
    • http://files.blendedak.us/uploads/1/3/2/6/132696029/diwupaxisu_mejux_gefupixejuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/3542/6970/files/pimimobowowusawov.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/volosifamapati.pdf
    • https://cdn.shopify.com/s/files/1/0450/4079/5806/files/best_quotes_about_success.pdf
    • https://cdn.shopify.com/s/files/1/0429/3859/7539/files/sosebejurisila.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/55576572985.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/givoxasigovulidis.pdf
    • https://cdn.shopify.com/s/files/1/0431/0774/5958/files/xegunux.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1073/files/zuribemuz.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5688/files/gibifudaburefexu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4014/4534/files/20801493072.pdf
    • https://cdn.shopify.com/s/files/1/0429/2814/4543/files/33260145914.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_off0000684b.bin
7e0fca5479882e5647b521fba9ba37322cb304f13b601108bd4cbfa864f289fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x684B 5612 bytes
font_01_sfnt_off00007b65.bin
39788789331ece29f9c161ac1c44f447a2396a4c4a2f0d129feb4930b8202831		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B65 10076 bytes

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