Malicious PDF — malware analysis report

Static analysis result for SHA-256 e68e4d0b642a9d66…

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 22:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a877ed19d1709b5e7f9b97d96dbf6553 SHA-1: bd775b7c62f37eedf658d8cd0b36fc2e12e83bf3 SHA-256: e68e4d0b642a9d669f7d4fbec541ea711f96afc49f90f04c1cc7c85136980d9a
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to a known malicious redirector. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many pointing to Shopify. The primary malicious URL identified is https://ttraff.cc/wix?keyword=love+and+logic+book. The document body contains garbled text but includes the malicious URL and a benign-looking PDF filename, suggesting a lure.

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.cc/wix?keyword=love+and+logic+book
    • https://cdn.shopify.com/s/files/1/0434/4391/2854/files/ditzy_dictionary_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/91542738138.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/defewogarafuvude.pdf
    • https://cdn.shopify.com/s/files/1/0433/4003/8298/files/wawasawigisememo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0435/6754/6527/files/16183333479.pdf
    • https://cdn.shopify.com/s/files/1/0450/8883/3701/files/shadow_of_the_storm.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5003/files/tree_species_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/6197/5971/files/dotezarixusugig.pdf
    • https://cdn.shopify.com/s/files/1/0435/9149/9935/files/kifaserokekor.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/gebados.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/beaglebone_black_schematic.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/jafodadijetiri.pdf
    • https://static.usrfiles.com/ugd/b914b5_98cc8a0260e344f3a3ca2fb6e801ec1f.pdf
    • https://static.usrfiles.com/ugd/599026_515d781d70364000b9353ce5bb5d4663.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_off00006069.bin
5b66c489d43c52b4c3c3c5d87ad7a1e6a772ebd73d3c0ddc022a22712637c213		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6069 5040 bytes
font_01_sfnt_off000071ad.bin
a09b287d2338458e7e9e22bdc4cfc0fc110d21185803ea827ff56490bcf93f38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AD 10236 bytes

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