PDF malware analysis — malicious · 0eadfb2f416d11cb

MALICIOUS

PDF

37.5 KB Created: 2020-08-30 12:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f1b73cb164e4353e5e0f22c6e44698fe SHA-1: 48f6356a3350411f2f80aa229449dfd1312918c7 SHA-256: 0eadfb2f416d11cb90405a402c2bc1f5a588aa3f061f7a8855f86abeff241a39

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to a link farm infrastructure. One of the primary links directs to a known malicious redirector URL, suggesting an attempt to lead the user to malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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=best+translation+of+critique+of+pure+reason
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/eed56f_d80432d6482c4293a3f3216a10edb5b1.pdf
- https://static.usrfiles.com/ugd/b8c837_c91f7b46b6004e72a4e186cd9e11a7bd.pdf
- https://static.usrfiles.com/ugd/5be868_ed0a98e2f8e14d91878ec59d4a34332f.pdf
- https://static.usrfiles.com/ugd/b8c837_d87134b51c754a6f99a83597c7862a2f.pdf
- https://static.usrfiles.com/ugd/b8c837_7093ddc8f9744b2aac5c360e0eaceeec.pdf
- https://static.usrfiles.com/ugd/b8c837_9af3265543474d41b4bdf191b94d007a.pdf
- https://static.usrfiles.com/ugd/b8c837_ae75794983e34753a538c1dc6fc6b536.pdf
- https://static.usrfiles.com/ugd/b8c837_2803fc05dab84343b08fa42b98065201.pdf
- https://cdn.shopify.com/s/files/1/0434/6970/1280/files/google_chrome_installer_for_pc.pdf
- https://cdn.shopify.com/s/files/1/0432/7453/5067/files/woocommerce_call_for_price.pdf
- https://cdn.shopify.com/s/files/1/0434/8598/6982/files/classical_gas_sheet_music_guitar.pdf
- https://cdn.shopify.com/s/files/1/0435/4038/1855/files/61787337193.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000054cf.bin` `4dbcf55af7bcf3407afbc811f25d965d758447d4ec7c0c572900a30713c94d48`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54CF	5184 bytes
`font_01_sfnt_off0000668a.bin` `695c0b645d99afd34c2a83b81017cec1037167c4b2bf3721aa394988c170b441`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x668A	10188 bytes

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