PDF malware analysis — malicious · e0700b8d81e52c87

MALICIOUS

PDF

47.2 KB Created: 2020-09-05 15:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: dd80f625ac084fd6b7aae3bff1e7d17e SHA-1: 299fc754e3e710fc0cad5138409162a5cdcdca15 SHA-256: e0700b8d81e52c87eba00961a2809f83142528430b0a2524e8cec69b8e3d815e

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was flagged as malicious by a machine learning classifier and contains a large number of embedded links. One of these links, https://ttraff.me/wix?keyword=alphabet+hebreu+francais+pdf, points to known malicious redirector infrastructure. The document body itself is heavily obfuscated and contains many URLs, suggesting a link farm or redirection scheme designed to lead users to malicious content. No scripts were extracted from this sample.

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.me/wix?keyword=alphabet+hebreu+francais+pdf
- https://static.usrfiles.com/ugd/5360f8_be6cbf75b93e416183f18f522ceaf649.pdf
- https://static.usrfiles.com/ugd/e481ce_f340e19f3460494aaaf758b6ea2bde41.pdf
- https://static.usrfiles.com/ugd/a6e5e9_ab3b546ed8de4f0f8d2bcf9e39a1e06d.pdf
- https://static.usrfiles.com/ugd/3f2390_bd86144ca0964456a6bd4d2a3cd7598e.pdf
- https://cdn.shopify.com/s/files/1/0430/9703/0817/files/kodedubutilebonip.pdf
- https://cdn.shopify.com/s/files/1/0438/2353/0141/files/roferonolobojetavaxar.pdf
- https://static.usrfiles.com/ugd/7c41c1_dbfef1a2e29040fd992ac220081967a1.pdf
- https://static.usrfiles.com/ugd/c33cdb_6b6be36a452c48e8b422d89797dc49c8.pdf
- https://static.usrfiles.com/ugd/ff2e72_c0f5b0d910244ed084e8ce310d5fd4a0.pdf
- https://static.usrfiles.com/ugd/ef253e_a57d9b51684e448f985537e6ebddce7c.pdf
- https://static.usrfiles.com/ugd/ceb2e8_8b830efd196a4961af3e764493382e98.pdf
- https://static.usrfiles.com/ugd/d9d1f5_3f37b2a20b0d4b02a252a13290934cef.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006e77.bin` `7dfe6c81f4decee22725e7d6ab27472afc8aecba04a626ede323b9581a4f0c86`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E77	5372 bytes
`font_01_sfnt_off000080ac.bin` `53cf4622142d11c0d19c6b28d576ee727296f153c1ca00bac67c46ae937f7c81`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80AC	16268 bytes

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