PDF malware analysis — malicious · 57a773389231c400

MALICIOUS

PDF

52.3 KB Created: 2020-08-31 22:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9d0e3459d47998381efb2e1d66f20947 SHA-1: fb0ce259987b9988fb7ee676ff66c9f1e8957340 SHA-256: 57a773389231c400c7138f9d2693c2705675eb4cab88fe97167c1871fd9572b2

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. Additionally, it contains a large number of embedded links, characteristic of a PDF link farm for SEO manipulation. The primary malicious URL identified is https://ttraff.com/wix?keyword=html+color+codes+pdf+file, which is likely used to lure users to malicious content.

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/wix?keyword=html+color+codes+pdf+file
- https://static.usrfiles.com/ugd/fa32a6_ca9b7b69af8f46a385b4a6e067fb2b1b.pdf
- https://static.usrfiles.com/ugd/3f80ec_ee0d3e669c204f82bf07d36acc349ccf.pdf
- https://static.usrfiles.com/ugd/b8c837_25f721a07d224e1392216c32a96e24b1.pdf
- https://static.usrfiles.com/ugd/b8c837_d83da753361544a79b60b27f58f047da.pdf
- https://cdn.shopify.com/s/files/1/0436/2600/4642/files/97641604501.pdf
- https://cdn.shopify.com/s/files/1/0433/6785/8334/files/asbestos_sheet_gasket_material.pdf
- https://cdn.shopify.com/s/files/1/0430/7232/3737/files/84604907237.pdf
- https://cdn.shopify.com/s/files/1/0428/8305/5782/files/96151742137.pdf
- https://cdn.shopify.com/s/files/1/0432/2259/7800/files/lokmat_newspaper_amravati.pdf
- https://static.usrfiles.com/ugd/4e6dd5_21cce24a191241579a5b1324040f49de.pdf
- https://static.usrfiles.com/ugd/2f8cea_4c313da341724734b3f57e646b35fb49.pdf
- https://static.usrfiles.com/ugd/23e9be_77f7d746121947709e41500bec0b01e2.pdf
- https://static.usrfiles.com/ugd/b8c837_58ab13cd913f46148ffee3d58e94a141.pdf
- https://static.usrfiles.com/ugd/b8c837_d4ffcaa7ded843768f2e4d80aa351a0d.pdf
- https://static.usrfiles.com/ugd/c3548c_7909e219b0784103a77d445998ab73db.pdf
- https://static.usrfiles.com/ugd/822ecd_58c81bda893145c5aef130edb5953538.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_off0000686d.bin` `bd3a99a70ff492be599b70072bde399f1c0b8584b1edb55189472651e3ff52fb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x686D	4732 bytes
`font_01_sfnt_off00007880.bin` `264b4b3ccdfd54358e482ab85fd55337a495005d824ca677c6de76d5447b4fc4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7880	21876 bytes
`font_02_sfnt_off0000b693.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB693	4324 bytes

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