Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd7b19764447b550…

MALICIOUS

PDF

38.7 KB Created: 2020-08-15 12:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fbc1673552057f4058e14c062d2ecbd SHA-1: 61fffafdccb30432a95710e95f37b3e55e8dcaba SHA-256: fd7b19764447b550632dc2d8432c10a50ff0cb44e49948358534f52d3f42a573
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though partially corrupted, includes the same URL and appears to be a lure for a PDF download. The presence of numerous external links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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.com/wb?keyword=lista%20de%20verbos%20en%20pasado%20simple%20en%20ingles%20pdf
    • http://files.johnbeswickfurniture.net/uploads/1/3/0/9/130969712/votebinewozepatidetu.pdf
    • http://mejozobe.gtqueens.com/uploads/1/3/0/8/130874330/najef_bolegaxitemifo_pijud.pdf
    • http://files.wanderersmagic.com/uploads/1/3/2/6/132695832/2352343.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/benevolent_fund_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0429/0969/6156/files/google_sheets_organizational_chart.pdf
    • https://cdn.shopify.com/s/files/1/0437/3856/2712/files/1370806584.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdf
    • https://cdn.shopify.com/s/files/1/0432/1889/5010/files/37874276857.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1924/files/443914390.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/pagekavanupa.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_off000059b0.bin
fd70c5487a0e2fd3bf5aea79d0b7bcf322a1851fb30869486097966d514c8033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B0 5500 bytes
font_01_sfnt_off00006c4f.bin
1b5f6eb608561924cf7e2630e5775be5143ffc69f0a8f540b73dc0a194b4dddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4F 9912 bytes

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