Malicious PDF — malware analysis report

Static analysis result for SHA-256 f690a1ca40b4025b…

MALICIOUS

PDF

39.6 KB Created: 2020-08-30 10:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5590e8e476c16561ac03d65c2063bd12 SHA-1: eb23d4545afbeb25756fbf342d4c4ce751d2f7cf SHA-256: f690a1ca40b4025b6569496e974e68b9f489bbb5625765f75242c57e84f7cc69
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as an instruction manual. It also hosts a large number of other PDF files on Shopify domains, suggesting a link farm for SEO manipulation or to obscure malicious activity. The primary malicious link is https://ttraff.cc/wix?keyword=invacare+reliant+450+instruction+manual, which likely leads to a malicious payload or phishing page.

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=invacare+reliant+450+instruction+manual
    • https://cdn.shopify.com/s/files/1/0435/3880/8991/files/zivinanujuvaloxal.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/computer_application_in_business_m._com.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/giperejarura.pdf
    • https://cdn.shopify.com/s/files/1/0435/3913/6661/files/80733924902.pdf
    • https://cdn.shopify.com/s/files/1/0440/7010/9334/files/7750134117.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7210/files/madonna_met_gala_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/mutilate_a_doll_1.pdf
    • https://cdn.shopify.com/s/files/1/0447/8589/3542/files/53776141809.pdf
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/liwevonedug.pdf
    • https://cdn.shopify.com/s/files/1/0435/4929/4756/files/ketomituz.pdf
    • https://cdn.shopify.com/s/files/1/0438/0151/0045/files/62614639863.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_off00005ba5.bin
ae1f02975a28f07facd4bbe0b3d693bbf1f031ee0943b09c29bd6d193bf5fdb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA5 5296 bytes
font_01_sfnt_off00006d97.bin
dfe99ae5416f0f8e43e6c9df166661758881bd5a9e392a38a9728a0475ee210f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D97 10624 bytes

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