Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e6519a54cf3150…

MALICIOUS

PDF

39.1 KB Created: 2020-09-06 12:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 476d1c508fed3e82a5a1c357c95af95a SHA-1: 828765fff26f56056373d954f2a17d2376d07907 SHA-256: 53e6519a54cf315080ac2111e423becc4ec62b989fa0b42c2ad4643a6604ca4a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.link'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to 'static.usrfiles.com'. The primary malicious URL is likely intended to redirect the user to a phishing or malware distribution 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.link/wix?keyword=demonstrative+pronouns+english+worksheets
    • https://static.usrfiles.com/ugd/b85eb0_7ec9d3508cc74cf7937e6be475360842.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_ab379d74108e43039e0876fcb4d5beb2.pdf
    • https://static.usrfiles.com/ugd/b1277d_477942d81b934d41a6263491425b1fca.pdf
    • https://static.usrfiles.com/ugd/d5cf39_d994de84aa5e4edba1f8b918f6d7ad2f.pdf
    • https://static.usrfiles.com/ugd/d01287_7c4b597076124d85811472c989dd3c46.pdf
    • https://static.usrfiles.com/ugd/33a16d_e03e593e95134729a8a517d4ff9ea73f.pdf
    • https://static.usrfiles.com/ugd/a474dd_a6f4f8c70733440b9fe5928ea8d736ff.pdf
    • https://cdn.shopify.com/s/files/1/0430/4375/0039/files/waste_to_energy_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/2748/1255/files/55192983213.pdf
    • https://cdn.shopify.com/s/files/1/0460/7311/8884/files/what_thickness_of_sheetrock_for_ceiling.pdf
    • https://cdn.shopify.com/s/files/1/0430/9195/1769/files/bojajatidogixurov.pdf
    • https://static.usrfiles.com/ugd/db93e9_3d9199661b774d0b8a5802862a911286.pdf
    • https://static.usrfiles.com/ugd/7b00a0_51800adbb0ce488c8acb0baa20e20232.pdf
    • https://static.usrfiles.com/ugd/d216cb_6c607a4d31fa4d889fd0d7d4cf9337ed.pdf
    • https://static.usrfiles.com/ugd/a771bd_b9ce0d8d162e4bdfbd53480c339e3d48.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_off00005b19.bin
977a1b22a32856d774c74c3189b92fda86c8c30a5c8131105ed66c51ab4b78b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B19 5448 bytes
font_01_sfnt_off00006d8b.bin
51cfc8c9255d1aacc4cff72528802bdd9120067e43053cb3bee6045b1c54e35a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8B 9956 bytes

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