Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c46f576faa51d9b…

MALICIOUS

PDF

30.5 KB Created: 2020-11-02 20:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb5f63795c08a0510ededd72a21f704d SHA-1: 98bbdf25c4f3d5c286fdec8a10d76c1dd3ca1fca SHA-256: 6c46f576faa51d9b6d8fc3c5ba8afef0a1b7230b6d9f312804ec38f434f48587
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links, many of which point to known malicious redirectors or link farms. The document body, though obfuscated, contains URLs that appear to be part of this link farm, attempting to disguise malicious activity as calendar information. The primary malicious URL identified is https://ttraff.cc/123?keyword=floyd+county+schools+calendar+2019+2020.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/123?keyword=floyd+county+schools+calendar+2019+2020
    • https://tejojapifofomo.weebly.com/uploads/1/3/4/3/134339563/ranixakupalive_ramogizuripu.pdf
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/75bc269f5056.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/sidobojugonuxexoz.pdf
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/fubamoxul.pdf
    • https://cdn-cms.f-static.net/uploads/4409250/normal_5f98b35155ec3.pdf
    • https://cdn-cms.f-static.net/uploads/4407318/normal_5f91fe302dcba.pdf
    • https://sobaxijuxoje.weebly.com/uploads/1/3/4/2/134235367/5043614.pdf
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/83905a54a030772.pdf
    • https://sijerixo.weebly.com/uploads/1/3/4/0/134042725/nedosebiva-fefavinutaragig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5ded06fa-5c8b-4b1e-aab1-8a551f099512/mujamulumanowifowuz.pdf
    • https://cdn.shopify.com/s/files/1/0500/5511/9012/files/20807632621.pdf
    • https://uploads.strikinglycdn.com/files/a9c6e387-885f-483f-bed3-ceb00ad4bdf6/remimixitomej.pdf
    • https://cdn.shopify.com/s/files/1/0428/4612/6247/files/galudik.pdf
    • https://uploads.strikinglycdn.com/files/4fe53161-2e7d-410c-8e45-24ccc0ba3177/36048614610.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000687b.bin
8ae7c2b4b456a1d3d4279169bdbc9e8f6b83c6aad78b33f7ecc079d2881f43e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x687B 5568 bytes

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