PDF malware analysis — malicious · 9fe7b3b8b61e1deb

MALICIOUS

PDF

46.2 KB Created: 2020-08-07 09:38:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c192b85233201ea74db59833ca066c34 SHA-1: 3daee0b66e3c9999af9a1daeb527d4041a5ba796 SHA-256: 9fe7b3b8b61e1deb2876ab1939859b3875a5f7a4601c40fe92c1b04bca117803

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, including one pointing to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL "https://ttraff.com/pify?keyword=causes+of+down+syndrome+pdf", suggesting a lure to a page that likely hosts further malicious content. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=causes+of+down+syndrome+pdf
- http://jujefof.brendanmark.com/uploads/1/3/1/4/131407155/1794878.pdf
- http://files.fightingvikings.com/uploads/1/3/0/9/130969726/dakuwavin_dijinupeja.pdf
- http://files.ogdenmarketing.com/uploads/1/3/1/4/131405977/db59f9493e100.pdf
- http://files.doeverythingwithgrace.com/uploads/1/3/1/6/131636954/7b7c6a9433.pdf
- http://files.cortlandacupunctureworks.com/uploads/1/3/1/0/131070849/gopemul-pumod.pdf
- https://cdn.shopify.com/s/files/1/0429/9263/1962/files/xegagemuxufuzip.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
- https://cdn.shopify.com/s/files/1/0428/7257/0012/files/killswitch_engage_incarnate_leak.pdf
- https://cdn.shopify.com/s/files/1/0431/6151/8231/files/gujepatuligokopomujoge.pdf
- https://cdn.shopify.com/s/files/1/0429/3056/9382/files/14474781480.pdf
- https://cdn.shopify.com/s/files/1/0437/1916/4058/files/audi_a4_allroad_2020_manual.pdf
- https://cdn.shopify.com/s/files/1/0440/0313/1542/files/fenujuxitapomajab.pdf
- https://cdn.shopify.com/s/files/1/0436/9124/5733/files/roponekeko.pdf
- https://cdn.shopify.com/s/files/1/0435/7115/1007/files/cch_axcess_document_converter.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdf
- https://cdn.shopify.com/s/files/1/0431/1020/3556/files/72745751524.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_off00006b67.bin` `e3b40cda47ce14f18896baae64459f4af1a854e9f4d0b9d626e0c58be4dc4562`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B67	5128 bytes
`font_01_sfnt_off00007ccc.bin` `b41c2e8ee562d3e129d4118d26594ec99ad0080e77d816a2fe6945b7416c4156`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CCC	9732 bytes
`font_02_sfnt_off00009e16.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E16	4324 bytes

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