Malicious PDF — malware analysis report

Static analysis result for SHA-256 da85969fda0482e7…

MALICIOUS

PDF

41.8 KB Created: 2020-08-31 19:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4edc0f275eb73ad097774d0a4558cd87 SHA-1: 9e017c0dc090131df269df05e7263c37df3428ef SHA-256: da85969fda0482e7698f0c24ec4cdbfbe70954de65c884f320e3de029eae0873
120 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, specifically 'https://ttraff.link/pify?keyword=burgmuller+ballade+pdf'. Additionally, another critical heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0438/6874/9979/files/geoffrey_broadbent_design_methods_in_architecture.pdf' being the first identified URL. These findings suggest the PDF's primary purpose is to lure users through links, potentially leading to malicious content or phishing sites.

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.link/pify?keyword=burgmuller+ballade+pdf
    • https://cdn.shopify.com/s/files/1/0438/6874/9979/files/geoffrey_broadbent_design_methods_in_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0433/3076/4955/files/kagamaruwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/8637/2246/files/86121507128.pdf
    • https://cdn.shopify.com/s/files/1/0433/6261/5446/files/limimixusasukebifaduziwu.pdf
    • https://static.usrfiles.com/ugd/8a419d_b3da7052e5a44762a44d653594fd3712.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/89136274488.pdf
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/11453837191.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0673/files/daniloxix.pdf
    • https://cdn.shopify.com/s/files/1/0429/9119/0167/files/wizojugija.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/nwa_and_the_posse.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_off00006631.bin
797e4d7bbf8fb19cba8c8e46ef8748cb7351398426241c7504c6c7772ee70184		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 5372 bytes
font_01_sfnt_off00007860.bin
192e6055d181520d26c43bfde359d66bd493465d8c94d94582e16728cce26c5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7860 10088 bytes

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