Malicious PDF — malware analysis report

Static analysis result for SHA-256 d055a709840165e4…

MALICIOUS

PDF

44.1 KB Created: 2020-08-04 22:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 562c82ff43fb9943a41014e21f8cd78c SHA-1: 0ddbca122c46234450a6b3b890cafa4ea150518b SHA-256: d055a709840165e4d3680baa110b4f620be05ac9f95e9bc393a6f130a0eb2e4b
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to 'ttraff.ru'. This indicates the document is designed to direct users to malicious infrastructure, likely for phishing or malware delivery. The presence of many Shopify-hosted PDF links suggests an attempt to obscure the malicious intent through a large number of seemingly benign URLs.

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=amplificateur+op%25C3%25A9rationnel+exercices+corrig%25C3%25A9s+pdf
    • http://files.homesolutionsns.ca/uploads/1/3/1/4/131437873/b266b.pdf
    • http://files.friendsofthechessietrail.org/uploads/1/3/1/3/131383942/bovepupekev-ratemik-jufetet-boxojare.pdf
    • http://files.mrshalford.com/uploads/1/3/2/8/132814680/lezuguje.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/2558986336.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gobobuxewinunegurugita.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/lutufe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7679/files/gibexajevewozuruko.pdf
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/35244400381.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/bwv_846_score.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/nilsson_riedel_electric_circuits_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/fivawikojejobenofu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/nitirupu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2060/7900/files/nidosuxeze.pdf
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/besos.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_off0000678f.bin
0bede94ed319f53fd09eed0cc3e2043e4186fd946773f8bc7204d008fd82c23b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x678F 5676 bytes
font_01_sfnt_off00007a85.bin
734efe788a29867aef981a6ca84799ad769cebf896ffe8b5de26d6fd14234e5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A85 11924 bytes

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