PDF malware analysis — malicious · d7108c34ff321215

MALICIOUS

PDF

63.7 KB Created: 2020-07-10 11:35:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a1069b267908e6e41373caddec77ad3e SHA-1: 275aaf621efa8e97a2e753ac1f5f7ed3447b2e31 SHA-256: d7108c34ff321215c7150cc8d0f0f11eaa9999dab9caef01f92c7fc3d5a1c1a6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links redirects to a known malicious infrastructure. This indicates a link farm or SEO poisoning attack designed to drive traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.com/wb?keyword=difference%20between%20medical%20and%20surgical%20asepsis%20pdf
- http://files.joyfor2day.com/uploads/1/3/1/3/131383383/1534363.pdf
- http://files.be-boosted.org/uploads/1/3/2/3/132303282/5ae8493412e.pdf
- http://files.pst4y.org/uploads/1/3/0/7/130738814/piwagitasesesuwatug.pdf
- http://files.tustinseo.com/uploads/1/3/1/1/131163514/8728756.pdf
- http://files.nlg-pros.com/uploads/1/3/0/9/130969910/katixiratowapo.pdf
- http://files.nosborne.com/uploads/1/3/1/4/131452741/70e95.pdf
- http://files.20thfightergroup.com/uploads/1/3/1/0/131070325/2467582.pdf
- http://files.iowaconcreteleveling.com/uploads/1/3/2/8/132814123/folisor-xulexitepatopi-dalojusera-gazuvomexi.pdf
- http://files.ryanchrisbartlett.com/uploads/1/3/0/7/130775837/3b2a6c4d4f56f.pdf
- http://files.leftanglebeta.com/uploads/1/3/0/7/130775192/de327b0fee2a378.pdf
- https://wutamewoj.files.wordpress.com/2020/07/fevebizozozatovek.pdf
- https://limalido.files.wordpress.com/2020/07/bakopomaralirin.pdf
- https://fipabimedimi.files.wordpress.com/2020/06/lipilup.pdf
- https://vevatasuso.files.wordpress.com/2020/07/66005977262.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xeniwepisovera.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66048758492.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000bb4e.bin` `521f49ee9c6814f1f4de243824fb68563eaf677deb25ade7903c6ba0b64202bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBB4E	5480 bytes
`font_01_sfnt_off0000cdde.bin` `6f6d3c0c2a7db14d75dee5b1def065eeed5085fec42806c20ebfe560df234389`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDDE	10276 bytes

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