Malicious PDF — malware analysis report

Static analysis result for SHA-256 b062f11f25b48373…

MALICIOUS

PDF

78.4 KB Created: 2021-04-01 22:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 062edbb3e8c855d4f22106bc73525479 SHA-1: 983cca62fb84ebd54089099cb352be823145dedd SHA-256: b062f11f25b48373a4f596244334a570bdb578b09d827047c9b613a87c397075
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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 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.
  • 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://resalured.ru/strik?utm_term=mainstay+table+instructions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451954/normal_600220b540ca3.pdfIn PDF document text
    • https://devumevone.weebly.com/uploads/1/3/4/5/134589636/e5e2bec.pdfIn PDF document text
    • https://tilakajunobeka.weebly.com/uploads/1/3/0/7/130739719/6acad0bb.pdfIn PDF document text
    • https://mewemevo.weebly.com/uploads/1/3/1/4/131454270/cab36966.pdfIn PDF document text
    • http://kogutojoveso.mywebcommunity.org/zozuxazomavemanezetimal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473031/normal_5fdde8f52d828.pdfIn PDF document text
    • https://jinozeposejide.weebly.com/uploads/1/3/1/4/131453810/wevel_wokomina_jiwirije_kexibal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_5fd18767ac631.pdfIn PDF document text
    • https://xurozakewera.weebly.com/uploads/1/3/1/4/131414240/437832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412391/normal_605d584e3f200.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/dekogamik/acuerdos_de_paz_de_paris_1973.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/befikre_movie_bestwap.pdfIn PDF document text
    • http://wagivudixar.epizy.com/juwixibedagomufefa.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/41524483984.pdfIn PDF document text
    • https://s3.amazonaws.com/jijumupade/jovobuvufogigepo.pdfIn PDF document text
    • http://wutorokanotomav.onlinewebshop.net/jolosuxaxuna.pdfIn PDF document text
    • http://gudugapapilile.atwebpages.com/nivasusomijag.pdfIn PDF document text
    • http://wajifinome.epizy.com/biblia_catolica_antiguo_testamento.pdfIn PDF document text
    • http://gedonoseg.epizy.com/bekirijez.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A1 5040 bytes
SHA-256: f4933d93f15770272897df2e02e0ea44776997271a92640014122968133c5eaa
font_01_sfnt_off000106e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E6 10980 bytes
SHA-256: 3907521f4d01739802417354409ac00c9819285fe9454fb83084988806ec3aec

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