Malicious PDF — malware analysis report

Static analysis result for SHA-256 84352c093783efdc…

MALICIOUS

PDF

43.9 KB Created: 2020-08-25 18:26:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67f6c81bf58eb4ea760e3b83c39315d8 SHA-1: b536959c85ee8f2823d77e2cd813e6a4fdaf458e SHA-256: 84352c093783efdc7d9bbc7c46a201841237e2ddc8e2e570a2b7be5e9ca675ad
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=por+qu%25C3%25A9+fracasan+los+pa%25C3%25ADses', is flagged as a malicious redirector. The document body, though partially corrupted, contains references to this URL and other Shopify-hosted PDFs, suggesting a coordinated effort to distribute malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

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=por+qu%25C3%25A9+fracasan+los+pa%25C3%25ADses
    • http://files.risenlordcatholicchurch.org/uploads/1/3/2/6/132681464/kasikesuk.pdf
    • http://files.lifecheme.net/uploads/1/3/1/4/131438240/xalovulupugikav-gogititu-vonotumujo-kiwuxo.pdf
    • http://xakosen.ms-wendys-class.com/uploads/1/3/2/8/132814500/suterisavafabepa.pdf
    • http://tebujalim.yamilkanoa.com/uploads/1/3/1/4/131437850/3043583.pdf
    • http://files.cornwall2theandes.com/uploads/1/3/0/7/130775310/9e42f41c295c9.pdf
    • https://cdn.shopify.com/s/files/1/0435/0204/3288/files/96692315999.pdf
    • https://cdn.shopify.com/s/files/1/0434/2215/4908/files/cardiopatia_congenita_fisiopatologia.pdf
    • https://cdn.shopify.com/s/files/1/0464/6122/3080/files/solamente_una_vez_agustin_lara.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/robubijalarowipej.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/leropuw.pdf
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/fashion_trend_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/autocad_house_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0429/4223/4791/files/pipuwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/9853837673.pdf
    • https://cdn.shopify.com/s/files/1/0457/9042/9340/files/49911056717.pdf
    • https://cdn.shopify.com/s/files/1/0432/0418/2173/files/escepticismo_radical.pdf
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/miloja.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_off000068ab.bin
3489c8bdcb3ddb6b6f407735658cb9a52438b89784541aeb8f24a753ba642c48
pdf-font-stream PDF embedded font (sfnt) at offset 0x68AB 5332 bytes
font_01_sfnt_off00007a99.bin
e26139739bb4882593363f376d626c7a27b832011404ae590e252ff7ea5c6007
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A99 11712 bytes