Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cbde059d147e7e6…

MALICIOUS

PDF

39.0 KB Created: 2020-08-21 14:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f0e14924daa80b77f6c3426c0a260be SHA-1: d581e7276dd04323bc45296deafe0d3b8c4880ea SHA-256: 1cbde059d147e7e62ddd05b9bca1abe5300c1e95af5c7c2e77ad7e21ebb29f71
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by the document body containing the text 'Free printable resume template pdf' and a URL pointing to a redirector. The file also exhibits a PDF link farm heuristic, indicating a large number of external links, many of which point to Shopify domains. The primary malicious URL is https://ttraff.cc/pify?keyword=free+printable+resume+template+pdf, which is likely used to redirect users to a malicious site.

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.cc/pify?keyword=free+printable+resume+template+pdf
    • http://files.brookeflemingfoto.com/uploads/1/3/0/7/130739144/kixikaxamofod_xujexev_bojiso_pasufexuzulezew.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/26720435203.pdf
    • https://cdn.shopify.com/s/files/1/0433/0645/1094/files/86694669451.pdf
    • https://cdn.shopify.com/s/files/1/0430/6544/2457/files/nejuno.pdf
    • https://cdn.shopify.com/s/files/1/0435/1141/4939/files/95825616017.pdf
    • https://cdn.shopify.com/s/files/1/0440/4068/3685/files/26689977821.pdf
    • https://cdn.shopify.com/s/files/1/0434/5384/1560/files/pufakugetupof.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/digesting_a_deposition.pdf
    • https://cdn.shopify.com/s/files/1/0435/1649/3976/files/32744591119.pdf
    • https://cdn.shopify.com/s/files/1/0434/5020/4327/files/kajefewekolisuse.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/xin_zhao_jg.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3199/files/lsat_study_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/xujofatanup.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_off00005aba.bin
6e8d9b974b777f6aeaa472ca49c056542671a01a159c85dba61eae5b75aecd05
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABA 5280 bytes
font_01_sfnt_off00006c87.bin
630e6d2f4008efd4e748cdb4aebc0614d90ecc03d0738a7b8a44cfa322ee7f3a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C87 10172 bytes