PDF malware analysis — malicious · 1db18292d9eb71e5

MALICIOUS

PDF

33.0 KB Created: 2020-11-01 07:41:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 83c0561d6f7c8decebfe9dcba8f2a486 SHA-1: 7ab82b97fdb5831aaaf210d72a7522a0c927b20e SHA-256: 1db18292d9eb71e5c62a4df84ab4b34fbf7e6b8ddad6aa16f0fc67c991b98721

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The heuristic firings indicate this PDF is a malicious redirector and part of a link farm. The primary purpose appears to be SEO manipulation or redirecting users to potentially harmful content.

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=boxhead+zombies+2+hacked
- https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/fakavug.pdf
- https://kazajiti.weebly.com/uploads/1/3/4/4/134456981/baxunezobulur.pdf
- https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/tifuxasorelav-sunagutigu-gikisifexixabot.pdf
- https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/6116436.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/panokojol/environmental_effects_of_air_pollution.pdf
- https://uploads.strikinglycdn.com/files/2a2fcb19-3073-40b5-a383-9f3e2c29fe7c/diary_of_a_mad_black_woman_full_movi.pdf
- https://s3.amazonaws.com/nilafafakem/logeketojemikepej.pdf
- https://uploads.strikinglycdn.com/files/5bbb341a-17f9-41f4-98d1-720be719b6ee/27496919719.pdf
- https://uploads.strikinglycdn.com/files/3865d23d-6b7e-4417-8b18-e46a01672ac9/rogewofajopavisijo.pdf
- https://uploads.strikinglycdn.com/files/11fd6382-92ac-4aa9-9a9f-2bcebb728c8f/18827695435.pdf
- https://uploads.strikinglycdn.com/files/1a16570c-38b9-4350-aca4-6cfd7eda0ba5/matematicas_3_zill.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_off00004348.bin` `3f6b2435f22dc367a64fb6675f29391d8f2079e82131c2a1942cd55a8ed54d5a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4348	5552 bytes
`font_01_sfnt_off00005617.bin` `bb716a31a115a847aa17e80bd7428dba8e6d9bc2b59916c48e766e7d8e8a5467`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5617	9816 bytes

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