Malicious PDF — malware analysis report

Static analysis result for SHA-256 740cc7aee46b9723…

MALICIOUS

PDF

47.0 KB Created: 2020-08-28 21:27:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82c9acaf1ed4acdb6d8bca7bb4f1f9d8 SHA-1: 459b6608c9b06b5cc48d566b466cd4178b8ce90d SHA-256: 740cc7aee46b97231c8115ba85ebcb186ca56b90db4891f6df85ffc47d96436d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to a URL disguised with a seemingly innocuous search query. The document body, though partially corrupted, contains text related to "Chinese takeout box template illustrator" and the malicious URL, suggesting a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify and static.usrfiles.com, likely for SEO poisoning or to obscure the primary malicious destination.

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=chinese+takeout+box+template+illustrator
    • https://cdn.shopify.com/s/files/1/0462/7742/7349/files/gidutimozumezowota.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/latex_less_than_or_equal_to.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4470/files/office_2016_volume_license_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3138/files/vutuzewapozafebejupagoba.pdf
    • https://static.usrfiles.com/ugd/b8c837_21485fa6f9214a2188425a7cfd558307.pdf
    • https://static.usrfiles.com/ugd/b8c837_c932625d6e78453ca8ecbc84a2ade8ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7c66bdfd47e45849508a83533fc6e57.pdf
    • https://static.usrfiles.com/ugd/b8c837_e39f5220c022485ba0e63cdb5461b43d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d432e32bd3b54e0988582ef2b3f4adce.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000650e.bin
e2711423bfa64929ed1eb8f467ee1cff3a11e2fb7380781ba37f926fcc096995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650E 5236 bytes
font_01_sfnt_off000076a2.bin
8517daca3b17b132d51669a0b4c10f465e186e3be42699e23795de75771c3657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A2 13548 bytes
font_02_sfnt_off0000a123.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA123 4324 bytes

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