Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f595f2d9ceafe06…

MALICIOUS

PDF

48.8 KB Created: 2020-08-03 18:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87ffc45c6b4bcf47b4a2c8918bd865ff SHA-1: c63ed0aacb672cbb621c3e6069975bc7324a7a7d SHA-256: 4f595f2d9ceafe060f58242c8b2e7608b31b31f08e10a4196f9fd5cef70b840f
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 external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=cornell+silverman+arithmetic+geometry+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of numerous Shopify links, while some are marked benign, could be an attempt to blend in with legitimate 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/pify?keyword=cornell+silverman+arithmetic+geometry+pdf
    • http://files.littlegabba.com/uploads/1/3/0/7/130739864/latazegogos.pdf
    • http://files.reedesslinger.com/uploads/1/3/0/9/130969459/40536.pdf
    • http://files.kellymarhaugojalvo.com/uploads/1/3/2/6/132696274/5672187.pdf
    • http://files.jenniecaseysinnott.com/uploads/1/3/0/7/130739234/wezubevon_zulijubawuxuvok_banerobekakabas_mafumefom.pdf
    • http://files.bismarckdetailing.com/uploads/1/3/1/4/131406427/1ac725.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/tajutulavepa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/35405197492.pdf
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/tubisibalilumubujofut.pdf
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/vimowiwokuwujuvibusute.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/55283745661.pdf
    • https://cdn.shopify.com/s/files/1/0434/8064/5782/files/fewadirusopipod.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/magurepotepirifilonowo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/febinesakabawa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19252536586.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3061/files/66718183968.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/98349158894.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/5113741464.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5137558887.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/14291024954.pdf
    • https://cdn.shopify.com/s/files/1/0431/1593/7948/files/knight_rider_2008_tv_series.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_off00007cf0.bin
2a78b18ef0d9fc79d11e750df48c927e3320c71f28226e9a783e60b98e93c86f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF0 5636 bytes
font_01_sfnt_off00008ffb.bin
44f37f72b63c05406598bad7b8516d467a8178496a43016599b759025d783b80
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFB 10912 bytes