Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ae7dec8fb9a5f9…

MALICIOUS

PDF

41.2 KB Created: 2020-08-11 11:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b9c4a5cad35986f731f972b46e49cf3 SHA-1: d53fee1703f01db5f3b82a507c85c5fe0961949d SHA-256: 29ae7dec8fb9a5f98bbe665017c60d9029bb04fac19b29ecca4b7fbe3b775dc5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains the URL https://ttraff.com/wb?keyword=sources%20of%20investment%20pdf, suggesting a lure related to investment information. This URL is the primary IOC, as it is flagged as malicious. The file also contains a large number of embedded links, many pointing to Shopify, which is likely part of a link farm to improve SEO for malicious content.

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=sources%20of%20investment%20pdf
    • http://files.livelifeunbroken.com/uploads/1/3/1/4/131437924/848e1e130b6.pdf
    • http://files.coachmenowau.com/uploads/1/3/0/7/130738504/wozusidafifonunu.pdf
    • http://files.recoveryhumanface.org/uploads/1/3/1/1/131164174/d0fd56.pdf
    • http://files.grandmasterlittlemasterseries.com/uploads/1/3/0/7/130739119/a61ebde250f.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/vector_calculus_4th_edition_colley_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/golafozuxujogenujevilo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/16345408739.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/pasago.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/zasubijapafefelelizok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/49181594438.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/89738652473.pdf
    • https://cdn.shopify.com/s/files/1/0433/5216/2462/files/surface_area_rectangular_prism_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0428/9232/9116/files/perubizukefomariguwuxul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89573664631.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/36556655844.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_off00006307.bin
0edea05bf2e34a49f88b824ce1b40dea58c92c5258051cd72afdd490172cecdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6307 5224 bytes
font_01_sfnt_off000074b6.bin
421ac35490cd0ecf53f3b6572947af4ef4606f319de0ef7af8f15052d6e56179		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74B6 10336 bytes

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