Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78df1845cee9f99…

MALICIOUS

PDF

45.5 KB Created: 2020-08-04 05:22:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67dc6cf6f6e0b488469284105a90fd3a SHA-1: 942928e043c56b12a14b5428541a9437db6e5285 SHA-256: e78df1845cee9f99701c8ab19c2f17dbc4e9a9913ea061a8a306041c7ee625fa
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with the primary link pointing to a known malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme designed to lure users to malicious content. No scripts were extracted, and the document body is largely unreadable binary data, limiting further analysis of specific payloads.

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/pify?keyword=jspdf+autotable+styles
    • http://files.darcyink.net/uploads/1/3/1/3/131379037/maxix.pdf
    • http://files.missiowaresourceportal.com/uploads/1/3/1/1/131163684/ff6a6.pdf
    • http://files.rebelgypsyartist.com/uploads/1/3/1/4/131455337/b4171c1effe41b4.pdf
    • http://files.cffu.org/uploads/1/3/2/6/132683111/bazakekukaxatiwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7843/files/diketusok.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/36984035314.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/unity_animation_trigger.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3112/files/11423605336.pdf
    • https://cdn.shopify.com/s/files/1/0437/8171/8173/files/wavadabudefezagofofulu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/gekuvotolujasikopokum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8128296882.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/lupadad.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/87816704533.pdf
    • https://cdn.shopify.com/s/files/1/0437/7028/2142/files/19339725135.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/sifojotubiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3511/files/53468030978.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_off00006a03.bin
da0ebd322adc0d195132cb2281854be401e9da0324ac201fdbb353d1b98f068b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A03 5172 bytes
font_01_sfnt_off00007bb6.bin
c4a3e1e788d000578eda6416f9aaf72bafbed532d2faf79c3bdd644b921bbd08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB6 14480 bytes

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