PDF malware analysis — malicious · fab68194cb1613e4

MALICIOUS

PDF

48.6 KB Created: 2020-09-01 06:56:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9ae5917ed81a151aaac8413446c7f81d SHA-1: 32a11fb9b096b738aabaca7fec38e8cb1b3a0aad SHA-256: fab68194cb1613e42ae984a3dbc17bb68e132445ff5808204b068fe9cd71b120

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of external links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. This indicates a link farm designed to lure users to potentially harmful content. The presence of numerous PDF links, some hosted on CDNs, suggests an attempt to obscure the final malicious destination. No scripts were extracted from this sample.

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.ru/wix?keyword=sacroiliac+joint+dysfunction+treatment+guidelines
- https://static.usrfiles.com/ugd/b8c837_11f98c82272947d1bb58f9fcd440486f.pdf
- https://static.usrfiles.com/ugd/1a89c8_03e90c04839540588d4cc607894df14b.pdf
- https://static.usrfiles.com/ugd/c7a620_58d1953135c44ad1b3035cc31e960b7a.pdf
- https://static.usrfiles.com/ugd/8b97dd_63704709481a4094976932b835d94914.pdf
- https://static.usrfiles.com/ugd/e32576_e61038ca2bf04aa581ddf1f84aba8964.pdf
- https://static.usrfiles.com/ugd/d01287_bcf41b09c051421ea4795098dc17f21b.pdf
- https://static.usrfiles.com/ugd/a771bd_f3b25aeb908d4fdc9295c85bdd6bcf95.pdf
- https://cdn.shopify.com/s/files/1/0437/6703/8106/files/warranty_deed_forms_florida.pdf
- https://cdn.shopify.com/s/files/1/0428/9455/7350/files/holt_mcdougal_algebra_1_common_core_edition.pdf
- https://cdn.shopify.com/s/files/1/0434/5279/2982/files/2d_call_of_duty_zombies.pdf
- https://cdn.shopify.com/s/files/1/0430/8064/6807/files/79363179671.pdf
- https://cdn.shopify.com/s/files/1/0435/6957/8147/files/inverse_trig_ratios_worksheet_answers.pdf
- https://cdn.shopify.com/s/files/1/0433/7978/5891/files/13957524301.pdf
- https://cdn.shopify.com/s/files/1/0433/7988/4195/files/61559551027.pdf
- https://cdn.shopify.com/s/files/1/0430/5915/1009/files/somoragukisasukotixoz.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_off00007113.bin` `b882a4aad14b87a99903088b5374bbd4f982f4445faad1bdc5001ba01eb2f3cb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7113	5504 bytes
`font_01_sfnt_off000083aa.bin` `e7bfa2d897260ed0f29c1dfa5a6684c81646b66b89796097f939f7f9894ce0ef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83AA	10208 bytes
`font_02_sfnt_off0000a68b.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA68B	4324 bytes

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