Malicious PDF — malware analysis report

Static analysis result for SHA-256 dffb748efc525298…

MALICIOUS

PDF

50.4 KB Created: 2020-09-01 17:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 892d3af4b007ee57911b2332f47a540b SHA-1: a5620549ed7cbce3efa63591e167a835ffee8bd1 SHA-256: dffb748efc525298fe8a427208c9bfb009d296df11efb722eab07f19b1e8863e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=love+breakup+video+songs++in+telugu'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to static.usrfiles.com. The document body, though heavily obfuscated, contains the same lure text and URLs, suggesting the primary intent is to drive users to the malicious ttraff.com domain.

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/wix?keyword=love+breakup+video+songs++in+telugu
    • https://static.usrfiles.com/ugd/b8c837_c2073b104cc74ced9fdaba9c8dc72939.pdf
    • https://static.usrfiles.com/ugd/a382ee_73a7802e77b24767b455fbbeb2193b34.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dab5f8518744f5480a8a1142c8bc6f9.pdf
    • https://static.usrfiles.com/ugd/902d29_8cafd285bc244da9a4598a31be6f9b32.pdf
    • https://static.usrfiles.com/ugd/b5aed9_94270a7bdefb42a780fea59b9270a9c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd134cce73ed48b3b14e5292415ba184.pdf
    • https://cdn.shopify.com/s/files/1/0440/5824/7320/files/types_of_oral_lichen_planus.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/86498293272.pdf
    • https://cdn.shopify.com/s/files/1/0438/2988/7136/files/73002782279.pdf
    • https://cdn.shopify.com/s/files/1/0429/9577/7699/files/kalujodiwiwoxujujofajumas.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_off0000884c.bin
53c674f08b5b908574e1725f9c081f033c67a9d7c3a476d3373de12014cef5d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x884C 5332 bytes
font_01_sfnt_off00009a7f.bin
017f4b99a9176c6db1f52f5981f207a2c1c68c61ede28feda65fe2bae484feda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7F 10120 bytes

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