PDF malware analysis — malicious · 4b5350e28d0d8904

MALICIOUS

PDF

61.0 KB Created: 2020-08-11 09:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: be976d00bfb017cd50d7ae68a56b5e88 SHA-1: f9f0b7dedb3420e60abe60b76d1856be3afc0bc0 SHA-256: 4b5350e28d0d8904a7b4951d3870863f38c706b5defa5c3b98f49bdd0ac3dad1

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a malicious redirector link disguised as a free software download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.com/wb?keyword=logiciel%20compression%20pdf%20mac%20gratuit as malicious. The PDF also contains a large number of embedded links, many pointing to Shopify, suggesting a link farm for SEO manipulation to distribute 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/wb?keyword=logiciel%20compression%20pdf%20mac%20gratuit
- http://gidup.ksouba.com/uploads/1/3/1/4/131407668/9722816.pdf
- http://files.boutiquefeisty.com/uploads/1/3/2/6/132683070/xowalujaj_lexibisopefaben.pdf
- http://files.twhawc.com/uploads/1/3/0/8/130814205/busufuposejad.pdf
- https://cdn.shopify.com/s/files/1/0428/3911/3895/files/grade_12_mathematics_textbook_free_download.pdf
- https://cdn.shopify.com/s/files/1/0448/9697/7051/files/csr_bluetooth_driver.pdf
- https://cdn.shopify.com/s/files/1/0431/1813/3405/files/58136708958.pdf
- https://cdn.shopify.com/s/files/1/0437/6032/0669/files/vapuniwagaterotew.pdf
- https://cdn.shopify.com/s/files/1/0428/9147/7159/files/atomic_theory_notes.pdf
- https://cdn.shopify.com/s/files/1/0435/9153/2699/files/wigapugunoxo.pdf
- https://cdn.shopify.com/s/files/1/0434/3640/8982/files/blitzcrank_support_build.pdf
- https://cdn.shopify.com/s/files/1/0452/1220/5216/files/xojolelebunuma.pdf
- https://cdn.shopify.com/s/files/1/0430/9359/0167/files/9801975202.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008bf6.bin` `eee86b9a1cdb0837a70e3f3c1b8c5769126fc8880de133aa126b42d5483bd834`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BF6	5416 bytes
`font_01_sfnt_off00009e44.bin` `daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E44	1800 bytes
`font_02_sfnt_off0000a6d2.bin` `ffc1f8142ea52ad229f0dae7df332729520bcaabb7d0213625931139d9ced0b4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA6D2	12924 bytes
`font_03_sfnt_off0000cf58.bin` `103284d61e2f608a7139598a8235a81e034b8e7c39e5230b5d697d4b99ccd341`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF58	16148 bytes

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