PDF malware analysis — malicious · 9db092d52887ee4b

MALICIOUS

PDF

79.5 KB Created: 2021-02-14 20:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22

MD5: 535ee440281c7b7e7c53da9ead5981e5 SHA-1: ca27ac2406a31b6e023b5f3db76487d72d06b786 SHA-256: 9db092d52887ee4b702369d6e3cf4fd26ea6c002ba5ec51cf07f9b0ffd6307d0

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external links pointing to other PDFs hosted on disposable domains, suggesting a tactic for SEO manipulation or distributing further malware. The primary attack pattern involves luring users to click on these links, potentially leading to exploitation or further infection.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
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://leonvi.ru/wb?keyword=dragon%20age%20keep%20choices%20guide PDF link annotation
- https://papuwupiruji.weebly.com/uploads/1/3/4/3/134348025/mapozisama.pdfIn PDF document text
- https://bimuwosexiwo.weebly.com/uploads/1/3/1/1/131164043/1738150.pdfIn PDF document text
- https://butijewib.weebly.com/uploads/1/3/4/8/134886415/f91a1bfd0f03fc.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369638/normal_5fc87246bb79a.pdfIn PDF document text
- https://wojewifonutej.weebly.com/uploads/1/3/4/8/134883442/tizomivuvujulumej.pdfIn PDF document text
- https://kevosenebiv.weebly.com/uploads/1/3/1/8/131871602/5194973.pdfIn PDF document text
- https://lurotafimeka.weebly.com/uploads/1/3/0/7/130740015/kewas_sumiwolulaxe_ruwevik_xiwefugijala.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408009/normal_5fdd31b875200.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376878/normal_6023020be09cc.pdfIn PDF document text
- https://vowizata.weebly.com/uploads/1/3/1/8/131856430/3652067.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408323/normal_5fe1d00b2c708.pdfIn PDF document text
- https://kifesajisibak.weebly.com/uploads/1/3/4/8/134884742/85a0c.pdfIn PDF document text
- https://tujozidu.weebly.com/uploads/1/3/4/6/134694944/7023458.pdfIn PDF document text
- https://tixowofo.weebly.com/uploads/1/3/4/5/134592641/lubasevuwejuruk-tuselovexiv-zevopajewejofam-ritubinez.pdfIn PDF document text
- http://nigma24invest.online/digestive_system_worksheetcthxp.pdfIn PDF document text
- https://zojopufowe.weebly.com/uploads/1/3/4/5/134523349/3526682.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/zuxime/critical_path_method_problems.pdfIn PDF document text
- https://s3.amazonaws.com/jedobufudajewu/87445424392.pdfIn PDF document text
- https://s3.amazonaws.com/nowokil/fox_news_weather_reporter_chicago.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ee1b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE1B	5168 bytes
SHA-256: `64ae47069a240b45fdd7e730291f84a270674108f6f89d59d4304c9ebafd178f`
`font_01_sfnt_off0000ff9e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF9E	10356 bytes
SHA-256: `3913059fba4a9fdb0f47a65a9a0005c577c5d97a96b052ee02e42b60e376fbb0`
`font_02_sfnt_off000122fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122FC	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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