Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e2c46525c54cefd…

MALICIOUS

PDF

39.3 KB Created: 2020-08-20 23:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 402355fc718c2e08a8661a45ff921a53 SHA-1: 724b72b013ed71920d321edf96abbfc644024b60 SHA-256: 1e2c46525c54cefd90178d47c11053f3e1519759f09d9f5113c7a01249c8119a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the text 'Examples of good lab report introductions' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a malicious redirector indicates an attempt to deliver a secondary payload or redirect to a phishing 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.ru/pify?keyword=examples+of+good+lab+report+introductions
    • http://files.justplayelitecamps.com/uploads/1/3/0/7/130739275/9474725.pdf
    • http://files.azprint115.com/uploads/1/3/1/4/131483002/gizojosiboxo-bakowuxanew.pdf
    • http://nalad.mattresslandnb.com/uploads/1/3/2/3/132302815/76c9dd005a6ba.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/dabamujozapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/32195092408.pdf
    • https://cdn.shopify.com/s/files/1/0429/9728/5027/files/76912886822.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6968/files/gantala_panchangam_2017_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/91281626560.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7148/files/17051031241.pdf
    • https://cdn.shopify.com/s/files/1/0438/1927/0306/files/96463891449.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_off00005bad.bin
905dedca0fe72b2fbcfb51b3683a49622d5f598f62607879f761d1024025276c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAD 5640 bytes
font_01_sfnt_off00006ece.bin
d57251ddb69cd910ffcee41acf48e387302cb8b0c0e9fa0634476c9409afdd83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECE 9800 bytes

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