Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfcf10cdf2f2fd97…

MALICIOUS

PDF

38.7 KB Created: 2020-08-25 05:29:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5f7ccc7271e0b4ac2412ce1fb4c7a97 SHA-1: 45d28ffb2168c3e7b489134f089e8b3e6c5d9443 SHA-256: bfcf10cdf2f2fd97c96dc95b7d564d013f8c412a838321cc63e9f341f787d9c1
150 Risk Score

Malware Insights

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

This PDF file contains a high number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though partially corrupted, contains the same URL, suggesting a lure to a malicious site disguised as information about car types. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=difference+between+auto+and+manual+car
    • http://lebodev.parowing.org/uploads/1/3/2/6/132683014/jimujow_kokefaterejudif.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/tomomojisezovisisozon.pdf
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/free_biscuit_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/nasabobinufedokebezune.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/kizisebabenavikar.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/sozilorigaxusasewata.pdf
    • https://cdn.shopify.com/s/files/1/0438/4751/6325/files/63633443485.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5894/files/jatumeza.pdf
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/88823035893.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/33510436548.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/41063612761.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_off00005a5e.bin
0fee0568f0c21931d35046f1e2d9fd8e3f9138ea55979d38b1a9359d8bd0c552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5E 5220 bytes
font_01_sfnt_off00006c17.bin
db96c9ffb336c44878a32f9a0104265429b15f063283c9c7ece7812815f657ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C17 10052 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.