Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c285d36d4002184…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 06:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41e961abade99ed1888f1fac07f0fbe5 SHA-1: 497e3d77472f61ae036e67be35911e1595e5c91e SHA-256: 1c285d36d4002184ced9f0023359b7a83a47f6f6f820bd3fe8733e8eaf919e48
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a significant number of which point to a link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=google+sheets+conditional+formatting+between+two+dates, is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection attempt.

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=google+sheets+conditional+formatting+between+two+dates
    • http://files.firstexecutivelimo.com/uploads/1/3/0/7/130739544/4254583.pdf
    • http://zabijop.ldbellsoccer.com/uploads/1/3/0/7/130776394/risikewozawi.pdf
    • http://xowidaxi.colearninglab.org/uploads/1/3/1/3/131378816/2642016.pdf
    • http://pimag.popcob.org/uploads/1/3/1/1/131164250/9238655.pdf
    • http://files.texaswolverineallstars.com/uploads/1/3/1/8/131871614/wipesazoto.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/98091236380.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/aristotle_rhetoric_summary.pdf
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/33099346513.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/tamepejimidafebor.pdf
    • https://cdn.shopify.com/s/files/1/0430/1206/3391/files/a_noite_dos_mortos_vivos_livro_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0435/1252/9055/files/jokademem.pdf
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/mount_allison_university_excel_training.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/25219385634.pdf
    • https://cdn.shopify.com/s/files/1/0436/9815/9769/files/66103873079.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/royal_ceramics_lanka_plc_annual_report_2013.pdf
    • https://cdn.shopify.com/s/files/1/0430/9535/9642/files/duskhaven_top_hat.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/contemporary_abstract_algebra.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_off0000619d.bin
da20556aaaf8d6695364f5404d2ec3f1470edbee296e94834146480b4fb47780
pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 5700 bytes
font_01_sfnt_off000074e9.bin
aacbf5b8e9fd55c9d7c4893b9f120fa33d5625bf6098daeee4d541198dc6cb85
pdf-font-stream PDF embedded font (sfnt) at offset 0x74E9 10260 bytes