PDF malware analysis — malicious · a109a3b7e170a6fb

MALICIOUS

PDF

71.2 KB Created: 2021-03-01 18:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04

MD5: 8f29d41ca3ed74c3718bf1fa01772701 SHA-1: d201b32c85f6e0f35ea1d7cab1cc8f5ed032f8f6 SHA-256: a109a3b7e170a6fb03271346c647bab3e2f01ea8e99a803fda692d12ab8e80b9

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

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
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://bologen.ru/award?keyword=motorola+vervebuds+110+true+wireless+review PDF link annotation
- https://cdn-cms.f-static.net/uploads/4452382/normal_602115f8c4902.pdfIn PDF document text
- https://cdn.sqhk.co/jukunobegabe/jhhesia/gatofigivivuwejitobobani.pdfIn PDF document text
- http://nabizutun.iblogger.org/tifuw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469849/normal_600dd69ba11ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457279/normal_600dc1ec6d9a5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4389568/normal_5fdc5fa02937f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4380699/normal_602e331c5f723.pdfIn PDF document text
- http://zomuregunaradu.iblogger.org/45836775043.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://sogefotatuledis.epizy.com/kezuvepej.pdfIn PDF document text
- http://xosofidevutora.epizy.com/autonomic_nervous_system_table.pdfIn PDF document text
- https://s3.amazonaws.com/fakuguvil/sad_bansuri_tone.pdfIn PDF document text
- http://pejaxuvotovu.rf.gd/bawos.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000da27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA27	5312 bytes
SHA-256: `22a84292845196b70a8f58b93bb3a3fea3ccd7a0df4b5688263538b1bc5071db`
`font_01_sfnt_off0000ec5e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC5E	10400 bytes
SHA-256: `609a5afdb05b93b4334d75dc042b985c6d6b388072b4ca0d3dd3bce14c9ad176`

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