Malicious PDF — malware analysis report

Static analysis result for SHA-256 82709f89f6c42841…

MALICIOUS

PDF

43.9 KB Created: 2020-08-07 04:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e808b819e306b9b832f37670f23a3e SHA-1: 0ca7cc655c74aac1983713de3eff7bfa7babec79 SHA-256: 82709f89f6c42841e8ed6fe9565cb6219d2b6dea5b96b7bc83c9c49d57ae52e0
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, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute the malicious redirector. No scripts were extracted, and the PDF structure itself does not indicate further malicious actions beyond the redirection.

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=festival+cervantino+2020+pdf
    • http://files.lifespringwesleyan.org/uploads/1/3/0/7/130739590/fifodedeboneso-tikolasetozu-rofuguxutujo.pdf
    • http://files.elizabethelectricians.com/uploads/1/3/2/8/132814906/mixaxasijigomu.pdf
    • http://files.parkviewyogaandmassage.com/uploads/1/3/1/0/131070713/puzemu_fusum_defuzovid_zixosebigirojom.pdf
    • http://files.cedarhillsoaps.com/uploads/1/3/2/3/132303312/8375156.pdf
    • https://cdn.shopify.com/s/files/1/0433/9263/0940/files/article_35a_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0431/4297/1553/files/2206870178.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/bagazusaxesowuwitijajegi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/lu_decomposition_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/memizezikorexu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/tezonesuwofekukabe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8176/7848/files/ninolodovudilewivonow.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/39382370030.pdf
    • https://cdn.shopify.com/s/files/1/0428/6545/9366/files/40826691278.pdf
    • https://cdn.shopify.com/s/files/1/0432/9845/5705/files/ardex_f5.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/2809245375.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/19578171988.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_off00006ad7.bin
bb387d4089d9f868ff767edef6ebba55641aca9b6abb1003ba14653378c27c54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD7 5436 bytes
font_01_sfnt_off00007d6d.bin
5cc176c1a21eac4559fd2c443dc343157a343ecbe711ff81011c89ef1fb909bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6D 11116 bytes

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