Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7b778184366203f…

MALICIOUS

PDF

45.3 KB Created: 2020-08-11 03:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7529dae98d4a5f301fba916e77e75b07 SHA-1: f1ba4a80181d9263b4af349fafa01f4b0aa4f081 SHA-256: f7b778184366203fc32246e8784915e8d863575adfcd1c2808c9a0b6ebeb0916
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=le+bourgeois+gentilhomme+english+pdf', is a clear indicator of malicious intent, likely serving as a lure to download further malware or redirect to phishing content. The document body itself is heavily obfuscated but contains the malicious URL.

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=le+bourgeois+gentilhomme+english+pdf
    • http://files.belllog.org/uploads/1/3/0/7/130775827/2358242.pdf
    • http://files.pho83.com/uploads/1/3/2/6/132683330/a05833b9146.pdf
    • http://files.blackdogfabrication.com/uploads/1/3/1/4/131437669/7231265.pdf
    • http://files.steamers18.com/uploads/1/3/2/7/132740865/zipex-lisutemud-batilikujofavaz-nikisedidor.pdf
    • http://files.fegerfurnishings.com/uploads/1/3/2/6/132681690/a17b146b5a0c.pdf
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/69961391565.pdf
    • https://cdn.shopify.com/s/files/1/0435/7164/2527/files/xigewisirisamutetux.pdf
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/alarums_and_excursions.pdf
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/18279355247.pdf
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/a_horse_and_two_goats_by_rk_narayan.pdf
    • https://cdn.shopify.com/s/files/1/0433/9744/7836/files/28002828890.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/pdf_file_reduce_size_mac.pdf
    • https://cdn.shopify.com/s/files/1/0438/1592/7965/files/72881085233.pdf
    • https://cdn.shopify.com/s/files/1/0435/1823/0688/files/ketanojusekofivusud.pdf
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/temporal_lobe_function_tests.pdf
    • https://cdn.shopify.com/s/files/1/0431/0741/8263/files/airtel_letterhead_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/10603775480.pdf
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/aptransco_syllabus_for_eee.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_off00006cb9.bin
3e2abce0356b298222cbaf4ec6f2e2e381f5e18635bb86fc8adf78af734818aa
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB9 5328 bytes
font_01_sfnt_off00007eaa.bin
cfdafbf8d16c371e30df8cbc65b1a625ae2c3e47d4428142a0bf122ed6260dc6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAA 12540 bytes