PDF malware analysis — malicious · 2881a814f4928459

MALICIOUS

PDF

39.2 KB Created: 2020-11-04 09:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 61f196f13d9fbe1f982f616709298bd3 SHA-1: 1b3adf8a20f88eab624e1e5c8dfaae335a76419b SHA-256: 2881a814f4928459f797b7970a6ce9663f6c2adaaa1a7a9e3693ce8acb774c36

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm designed to lure users to malicious sites. 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://gettraff.ru/aws?keyword=mckinney+trade+days+2020
- https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.pdf
- https://cdn-cms.f-static.net/uploads/4384318/normal_5f9a5ef8065a5.pdf
- https://cdn-cms.f-static.net/uploads/4408478/normal_5f9fd805d469e.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/gazitif/describe_yourself_in_interview.pdf
- https://s3.amazonaws.com/purufiz/big_farm_mobile_harvest_mod_apk.pdf
- https://uploads.strikinglycdn.com/files/b58e00f3-3bef-4165-b29e-1961c6b9267e/columbia_elementary_las_cruces_nm.pdf
- https://s3.amazonaws.com/fejififimaketo/80720820834.pdf
- https://uploads.strikinglycdn.com/files/78ae3df7-1391-4a3a-b2a0-1fc64e805401/jofefimobubanadeku.pdf
- https://s3.amazonaws.com/wupiwupiwot/instruction_manual_format.pdf
- https://uploads.strikinglycdn.com/files/d74c5df4-d26f-4455-aad5-a6d2317e81fd/1571458464.pdf
- https://s3.amazonaws.com/wonoti/37037835112.pdf
- https://uploads.strikinglycdn.com/files/93648555-8e19-46f9-a1a0-7d40dcbcf3c6/juzidu.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_off00005c7b.bin` `fcf28cd5d8eed7b8857cffd906f66f4be4af8e7b8b40acf5b36c2173c8ae56e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C7B	5344 bytes
`font_01_sfnt_off00006ecd.bin` `7b5ecd2d4667541e55974e0f2fb7e6ab2fb85088bef989fc1f45f52aa6210c30`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6ECD	9732 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.