Malicious PDF — malware analysis report

Static analysis result for SHA-256 970876d6efd3ee91…

MALICIOUS

PDF

80.5 KB Created: 2021-02-18 07:41:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 51b7de421c4905d2d4fe9f6d4fd1b1b0 SHA-1: 5a2696300f3d9acb73a3b03dec83789c8c23c316 SHA-256: 970876d6efd3ee91f1f209b11b77586598db6b95afcae72f3c0394d96f1661ee
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/123?utm_term=survival+skills+primitive+fake PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465025/normal_5ffd4d7e3111c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450730/normal_5fcb78906e30a.pdfIn PDF document text
    • http://kiwirixup.22web.org/29601522298.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_5fe3bade13620.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369327/normal_5fe546b75235d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5fcef478cf9f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464525/normal_5fec99f541de6.pdfIn PDF document text
    • https://cdn.sqhk.co/vopupevomate/g8DhaBM/lakukefakixijudimifawowon.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/hfywDhd/christmas_gifts_for_grandpa_who_has_everything.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/sLFVbja/1244044163.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426972/normal_5fef1a64245fc.pdfIn PDF document text
    • https://cdn.sqhk.co/jefapukawore/dibjcme/polycab_cable_gland_selection_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/fd0gdha/baby_shark_costume_diy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dobejul.epizy.com/days_of_week_english_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/18740299889.pdfIn PDF document text
    • http://gojaxuga.epizy.com/bootstrap_form_classes_list.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/16123811997.pdfIn PDF document text
    • http://bamalupit.rf.gd/appareillage_electrique_domestique.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.

FilenameKindSourceSize
font_00_sfnt_off0000fcc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC9 5272 bytes
SHA-256: 7936e26587d7d6aa45c08e2cebe2bb1040c657c3a07f5033cfab32d4a1f898d5
font_01_sfnt_off00010eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAA 11696 bytes
SHA-256: e2bbeffe19e049eb0c8055c2c8aaa098d467bdd14cf5dce9f4e1ed9ba48044c5

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