PDF malware analysis — malicious · be9dedf8b6a4b7ff

MALICIOUS

PDF

74.4 KB Created: 2021-02-24 14:13:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30

MD5: 7faa5d56a3c6a9ae75ccbab797fd30e9 SHA-1: 5100e95f77de52f2bae21d2d99aff7117ee88604 SHA-256: be9dedf8b6a4b7ffe8a62e0fa175232f499b98de76b7b4922e3c1194c8883ffb

212 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 a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'visual basic net download', suggesting a lure for technical content. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or manipulate search engine results.

Machine Learning

Nyx PDF Classifier malicious score 0.9765

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://yafferge.ru/wb?keyword=visual%20basic%20net%20download In PDF document text
- https://letogapebo.weebly.com/uploads/1/3/5/3/135320268/7477233.pdfIn PDF document text
- http://mihetos.xyz/pancreatitis_diet_sheet99m9i.pdfIn PDF document text
- https://feziriwavejoli.weebly.com/uploads/1/3/4/0/134096108/f5517.pdfIn PDF document text
- http://help-feedback-amzn8.xyz/121484926373fmhx.pdfIn PDF document text
- http://copyright-securityx.com/babemojazivegesepadexesujh901.pdfIn PDF document text
- http://italiahot.fun/436114793416y4x9.pdfIn PDF document text
- http://ig-soft-team.com/760907775953w8yz.pdfIn PDF document text
- http://porepafenepiwim.iblogger.org/nometozedenisomopita.pdfIn PDF document text
- http://hellochildren.online/lessee_information_sheet_subsequent_filing78rvx.pdfIn PDF document text
- https://fitijozis.weebly.com/uploads/1/3/4/3/134372299/bekovobizalu-wavivejojagemu-sasuduz.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/gonafoziguwewe/49399926729.pdfIn PDF document text
- https://s3.amazonaws.com/likerajatob/guest_relation_interview_questions_and_answers.pdfIn PDF document text
- https://s3.amazonaws.com/mexijegedakol/kakafukefoguzo.pdfIn PDF document text
- https://s3.amazonaws.com/mupukesunobaga/libreoffice_brochure_templates.pdfIn PDF document text
- https://s3.amazonaws.com/tobovunoberiki/narrative_literature_review_template.pdfIn PDF document text
- https://s3.amazonaws.com/davubewu/1750781530.pdfIn PDF document text
- https://s3.amazonaws.com/gotijejaj/medaxenewolox.pdfIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011478.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11478	5032 bytes
SHA-256: `90274229a45ee9aa61843e4e838848f6b59b77724d54ca649ab690dd0ded5a12`

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