PDF malware analysis — malicious · fdbb49b60fd75c94

MALICIOUS

PDF

40.4 KB Created: 2020-08-08 05:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a534a96b6f2d681734f8c68ce5d7366b SHA-1: 76aa6e00262c5fa02d2939b19a63db0acb2f410a SHA-256: fdbb49b60fd75c94547344bb9c050c0d6194b9f31054102711675c3c5055b5e6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many hosted on Shopify, suggesting an SEO link farm. One prominent link, 'https://ttraff.cc/wb?keyword=traitement%20d'insuffisance%20cardiaque%20pdf', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to medical treatment and the PDF's creation tool, reinforcing the lure. The primary attack pattern involves redirecting users to malicious infrastructure via a deceptive link.

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.cc/wb?keyword=traitement%20d
- http://files.armahart.com/uploads/1/3/1/1/131164100/1282497.pdf
- http://files.nxtgenerationenergy.com/uploads/1/3/2/7/132740415/sodegebu.pdf
- http://files.alexlawkc.com/uploads/1/3/0/7/130740141/4795345.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdf
- https://cdn.shopify.com/s/files/1/0438/5928/0022/files/taxaxojigu.pdf
- https://cdn.shopify.com/s/files/1/0439/0112/4760/files/69188225348.pdf
- https://cdn.shopify.com/s/files/1/0440/5932/8662/files/dobexukif.pdf
- https://cdn.shopify.com/s/files/1/0428/2885/7503/files/riwevafosufebuzivupegu.pdf
- https://cdn.shopify.com/s/files/1/0437/6104/1559/files/pideru.pdf
- https://cdn.shopify.com/s/files/1/0431/8648/7455/files/puzokotifuritananewer.pdf
- https://cdn.shopify.com/s/files/1/0432/4550/2626/files/febubodupemadunuwogu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34530012154.pdf
- https://cdn.shopify.com/s/files/1/0433/6097/7048/files/77826180676.pdf
- https://cdn.shopify.com/s/files/1/0438/2123/6386/files/apostles_doctrine.pdf
- https://cdn.shopify.com/s/files/1/0447/4011/6629/files/assignment_writing_guidelines.pdf
- https://cdn.shopify.com/s/files/1/0437/8420/8545/files/waltzing_matilda_chords.pdf
- https://cdn.shopify.com/s/files/1/0432/6470/4662/files/92116636396.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_off00005e2a.bin` `b78c35e220bc1d42b750c246c96fb8828f862a5244470e812a43f6814c5d1f69`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E2A	5380 bytes
`font_01_sfnt_off00007064.bin` `7614ba97374e628dcd7c2a813fab92dff30ede15988c37af64a2eb1452d32c9e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7064	10796 bytes

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