Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e52640f3b76b9ba…

MALICIOUS

PDF

39.7 KB Created: 2020-09-01 22:46:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 942072ec97bfa260b52e88a07225b26b SHA-1: f2c9c67d57c7893f5b0ed038b52da11ef3799ffb SHA-256: 9e52640f3b76b9ba368712bad856b05a75fbdabfbe7571380f2b2714a5d864e5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to benign Shopify-hosted PDFs. However, one link, https://ttraff.club/wix?keyword=cds+2+2019+notification+pdf, is identified as a malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious sites. No scripts were extracted, and the document body is heavily obfuscated.

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.club/wix?keyword=cds+2+2019+notification+pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2962/files/boone_and_crockett_elk_scoring_guide.pdf
    • https://cdn.shopify.com/s/files/1/0445/3256/4132/files/penatalaksanaan_psoriasis_vulgaris.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/zedazimum.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2460/files/sample_application_for_leave.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_9c43f0d649fc4d96bfd8b93557f178d2.pdf
    • https://static.usrfiles.com/ugd/18f527_e8fb145f09974ed7b0fd65d9f5a0c530.pdf
    • https://static.usrfiles.com/ugd/e33828_50d9112313d4473097cfcc07fb88dc7b.pdf
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/ielts_speaking_part_3_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/79188882109.pdf
    • https://cdn.shopify.com/s/files/1/0440/4045/4294/files/76190687082.pdf
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/zelogizo.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_off00005cc2.bin
10f13ba8453350d6b8cb9d7ead3a0f25e198a53b550f03d9dea0b3f2c3b6092f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC2 5408 bytes
font_01_sfnt_off00006f3f.bin
07f4d6337a62e40240e4eaea984d300e35378037097a4d2a131f88f0c80d69c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3F 10340 bytes

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