Malicious PDF — malware analysis report

Static analysis result for SHA-256 541590cffd4916e8…

MALICIOUS

PDF

37.8 KB Created: 2020-09-02 13:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76dadbfde1ac61f9691567ec2657d2bb SHA-1: 2f8d3ba1ae5a4d31c3b283f9f8aba7d29987b822 SHA-256: 541590cffd4916e82718175521a4ec980e16d868bab445e4fe89b9e4cf5270ae
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text that appears to be a lure for a movie, and the malicious URL is embedded within this text. This suggests the PDF is designed to trick users into clicking the link, leading them to malicious content.

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.me/wix?keyword=creature+movie+full+hd
    • https://static.usrfiles.com/ugd/221f3a_7f6698b2688a4577a8972281e89b8570.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b933f5f6e99408eb214fd4efcbba7dc.pdf
    • https://static.usrfiles.com/ugd/f9d4cd_db48c07b749f42cda71aab02a7fa9ff4.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuxovozukirofavekejob.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6421/files/sasaxisebovitedajakaka.pdf
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/accounting_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/lexezazagud.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/gogasavifimagisemuluravub.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/sufilemakelokewoxub.pdf
    • https://cdn.shopify.com/s/files/1/0462/2440/8730/files/binatone_m405_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/36873966576.pdf
    • https://cdn.shopify.com/s/files/1/0435/6653/0728/files/35980562699.pdf
    • https://cdn.shopify.com/s/files/1/0430/5371/1513/files/curriculum_design_and_development.pdf
    • https://cdn.shopify.com/s/files/1/0440/0264/0030/files/john_deere_owner_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0447/9392/1685/files/waec_core_mathematics_syllabus.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_off000054ea.bin
cd38d8d0243de55ee7707dc9349e0bee9bb0ffb030a460b79274607f7df80559		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54EA 4932 bytes
font_01_sfnt_off00006586.bin
2f029068deb96c15315c64c8955d9a6ef40e82b8dec84ee861a86f35bfb40af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6586 10904 bytes

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