PDF malware analysis — malicious · fa9d75ad36550481

MALICIOUS

PDF

64.6 KB Created: 2020-08-31 04:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0681ebae16e1531f8bf6b974e9f81c81 SHA-1: 2b3640eebca51173f02b054d824b0de90c386948 SHA-256: fa9d75ad365504814189494e8d3e25728cebdc27944f2440ee548cadb936abd8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged for containing a large number of external links, a common tactic for SEO poisoning or creating link farms. One of these links, 'https://ttraff.cc/wix?keyword=ark+raptor+z%25C3%25A4hmen', is known to redirect to malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body appears to be largely obfuscated or contains minimal readable content, making it difficult to determine a specific lure.

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/wix?keyword=ark+raptor+z%25C3%25A4hmen
- https://static.usrfiles.com/ugd/73c254_d444f5ae860f42769d36902164d7611d.pdf
- https://static.usrfiles.com/ugd/856cea_3c82ee83620d4fd09a73bc1a67e7634f.pdf
- https://static.usrfiles.com/ugd/de65f7_6fa457ab725d44058016cfeaedb7476c.pdf
- https://cdn.shopify.com/s/files/1/0434/3057/6295/files/contractions_worksheet_grade_3_free.pdf
- https://cdn.shopify.com/s/files/1/0433/8306/2695/files/brick_bond_patterns.pdf
- https://cdn.shopify.com/s/files/1/0437/1985/2187/files/bridal_march_wagner.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevebetivegukubevam.pdf
- https://cdn.shopify.com/s/files/1/0436/2502/1603/files/sinusoidal_oscillators_notes.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11085861466.pdf
- https://cdn.shopify.com/s/files/1/0433/5819/1768/files/meruwuvonixejixibegam.pdf
- https://static.usrfiles.com/ugd/585b1d_9dd666c7839441fcad73cfddd53b744b.pdf
- https://static.usrfiles.com/ugd/0cd019_a11195b3e3864df885f2f578c82cc8aa.pdf
- https://static.usrfiles.com/ugd/7f16bd_26bcd97105e64c7fa94418495f1e8af1.pdf
- https://static.usrfiles.com/ugd/2f3ac6_da55c65c83d84e70ab2c1c8ce83f3e1b.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_off0000a35a.bin` `2630ee391e112cca27e07b461fcea7ee31148ad317109ca77da18024df2afd1a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA35A	5188 bytes
`font_01_sfnt_off0000b452.bin` `c5816c58de360ab2b43e4646599f2e490023fa3aac6fc9c5027a83e2dc4dbe76`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB452	13408 bytes
`font_02_sfnt_off0000de65.bin` `43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE65	16132 bytes

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