PDF malware analysis — malicious · e745340cbde50192

MALICIOUS

PDF

68.1 KB Created: 2021-03-06 01:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: ca32c6d9b4b3d722d0de60a6c722d71b SHA-1: 1a306d682220b7e888d62090a8ba18ceb9879ff8 SHA-256: e745340cbde50192b71f6205aeefc37f3a445e8154d8ce572bd277710e00c15f

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.8462

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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
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/award?keyword=the+practice+of+creative+writing+a+guide+for+students PDF link annotation
- https://static.s123-cdn-static.com/uploads/4450517/normal_5fdcc35c5c8f3.pdfIn PDF document text
- http://businesslinecenter.com/46959782116szaad.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494661/normal_603a2a237722a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423443/normal_6018d6844a89b.pdfIn PDF document text
- http://delayikapy.xyz/2008_ranger_4.0_towing_capacityq786a.pdfIn PDF document text
- https://cdn.sqhk.co/lelogusobade/3hfgh8h/coefficient_management_des_entreprises_bts_nrc.pdfIn PDF document text
- http://daliadiago.com/property_inspection_report_template_word1h2ig.pdfIn PDF document text
- https://cdn.sqhk.co/nasubivapu/cjhahgE/82059705008.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408176/normal_600d8799a2676.pdfIn PDF document text
- https://cdn.sqhk.co/gulifunanale/H3xDghT/absorption_coefficient_of_water_vapor.pdfIn PDF document text
- http://coolstudent.space/xipigozolipozarekahwocc.pdfIn PDF document text
- https://cdn.sqhk.co/fafujedajir/ia1jcjd/8901344440.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4465003/normal_5fdee8bc2e6b5.pdfIn PDF document text
- http://instapriz365.site/gobubu1xd2i.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/lazolu/levis_511_size_guide.pdfIn PDF document text
- https://s3.amazonaws.com/takateg/organisation_structure_template_ppt.pdfIn PDF document text
- https://s3.amazonaws.com/jipowumat/rapokivinidisi.pdfIn PDF document text
- https://s3.amazonaws.com/jedadokuti/best_free_audio_guides_rome.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_off0000f605.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF605	5484 bytes
SHA-256: `3ae6f577c55d0b3bfb156c82540fa32c0fe03589332f76d5efe42aa38cc2f9f7`

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