PDF malware analysis — malicious · 4766d852b3e71f79

MALICIOUS

PDF

72.6 KB Created: 2020-08-01 11:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4c6889d214928e3c9ba3d67316724485 SHA-1: 74e1f6ea8153ded574b26671f186069e8cdbeb11 SHA-256: 4766d852b3e71f79b5bc2e3ffdef7f45398997be15403fd127411624ecc55919

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to deliver a second-stage payload. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, suggesting an attempt to manipulate search engine results or distribute malicious content broadly. The presence of invoice-like language further supports a phishing or scam-related attack pattern.

Heuristics 4

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.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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/pify?keyword=memorandum+for+record+army+example+wlc
- http://files.goodworthclatford.com/uploads/1/3/1/8/131856293/6254736.pdf
- http://files.maupintown.com/uploads/1/3/1/3/131384492/528b155d2a5229.pdf
- http://files.thecabinetart.com/uploads/1/3/0/7/130775027/lurodalujug.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31056735454.pdf
- https://cdn.shopify.com/s/files/1/0432/2823/3887/files/bibemiroviwivurojowewoveb.pdf
- https://cdn.shopify.com/s/files/1/0435/1728/0408/files/36623695948.pdf
- https://cdn.shopify.com/s/files/1/0428/1355/4855/files/vikivafivazeluwiso.pdf
- https://cdn.shopify.com/s/files/1/0430/4211/1650/files/9986784296.pdf
- https://cdn.shopify.com/s/files/1/0438/0003/5485/files/zarulesijadabokafu.pdf
- https://cdn.shopify.com/s/files/1/0431/9812/0094/files/polof.pdf
- https://cdn.shopify.com/s/files/1/0435/5407/8871/files/kosezimipulono.pdf
- https://cdn.shopify.com/s/files/1/0431/8717/5588/files/36534736604.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdf
- https://cdn.shopify.com/s/files/1/0431/7426/4981/files/7737232333.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c09f.bin` `6c34f46c1eae187b5ef8bba854a7b40227c22239939beb3235fd3a4cfabc0efc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC09F	5388 bytes
`font_01_sfnt_off0000d308.bin` `c6df31731d17da765508dd7ab4c4a2f45deb822e4f71a6dc2dcca08217a92f58`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD308	14416 bytes
`font_02_sfnt_off00010099.bin` `5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10099	16060 bytes

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