Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff1a1d3971934b7…

MALICIOUS

PDF

42.1 KB Created: 2020-08-29 05:39:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04a49febabe118d40482afa6bee9e0b3 SHA-1: 06e9937ab84e20c7e3fae07bd043d955955b9ead SHA-256: aff1a1d3971934b76c283b143f4449ef8822834e0107986f95be2f1a088e838c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=prison+break+season+3+download+free', is designed to lure users with a fake download promise. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector.

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=prison+break+season+3+download+free
    • https://cdn.shopify.com/s/files/1/0428/4658/4999/files/sozoxegigamibotuxiretega.pdf
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/74601426242.pdf
    • https://cdn.shopify.com/s/files/1/0461/9829/2643/files/mugifogugolexezategev.pdf
    • https://cdn.shopify.com/s/files/1/0427/7751/0055/files/elements_of_econometrics_kmenta.pdf
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/71856027302.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/mb_to_kb.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9953/files/awkward_turtle_game.pdf
    • https://cdn.shopify.com/s/files/1/0428/8266/2553/files/xelijulolekubawemox.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/31354218435.pdf
    • https://cdn.shopify.com/s/files/1/0433/8787/9580/files/rafenu.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1edcb8a83c94dfea2c829b95e17ac54.pdf
    • https://static.usrfiles.com/ugd/b8c837_c33b2911070047f5bcef2f751b8f7695.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e138940fa5a4d36bc393f9bad6b77b6.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ace789601ea4c1f97ab7d4ec4c73629.pdf
    • https://static.usrfiles.com/ugd/b8c837_61e9ac62fda44b49bbb4f0c32d5f05b1.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_off000063d7.bin
c6c4852d8639f2dbf15a520853b0f989b821d3ce275835389ce326adfb4130c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D7 5364 bytes
font_01_sfnt_off0000762d.bin
d4e171f4bbdc9b472382432b36f607146b60711428922946777b7fde9fbd1d59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762D 10928 bytes

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