Malicious PDF — malware analysis report

Static analysis result for SHA-256 0746a35dade76f9d…

MALICIOUS

PDF

76.4 KB Created: 2021-05-10 19:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b58d8794120f07c1919681a6cd1bab7 SHA-1: 239b60837c334a78927f9905ffbaf7a21ed53812 SHA-256: 0746a35dade76f9deeafb3d65e6e3a17a8ab95aedc5b3ba28404ab480b6d4bd5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. It contains an embedded URL that appears to be part of a lure, directing users to a website that claims to help find local classes. No scripts were extracted, but the presence of external URIs and the phishing detection suggest the document's primary purpose is to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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://seumenha.ru/strik?utm_term=find+tai+chi+classes+near+me
    • https://cdn-cms.f-static.net/uploads/4486037/normal_604dab4437e4b.pdf
    • https://cdn-cms.f-static.net/uploads/4497079/normal_6063563471267.pdf
    • http://psylath.com/vugedowgz7kh.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://babysampler.com/nyanyi_sunyi_amir_hamzahjg6ip.pdf
    • http://xomutukegadoj.mypressonline.com/20481076295.pdf
    • http://13millions-warzone.store/2940273043339c3c.pdf
    • https://static.s123-cdn-static.com/uploads/4381759/normal_5feb8ef542d29.pdf
    • https://cdn-cms.f-static.net/uploads/4427274/normal_5fda84f18f2d5.pdf
    • https://static.s123-cdn-static.com/uploads/4408176/normal_5feb7042dad04.pdf
    • http://verification-help.com/bejumuzomikigikefh1my.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xulepiwa/84411787497.pdf
    • https://uploads.strikinglycdn.com/files/851caff3-c929-4031-916d-da12471c63da/what_is_the_best_alarm_clock_radio.pdf
    • https://s3.amazonaws.com/fejenijovekozu/sujuvofanogudededuni.pdf
    • https://s3.amazonaws.com/widofafane/37816182644.pdf
    • https://uploads.strikinglycdn.com/files/eb684c97-29cb-477f-8b13-f3a2944ef596/sap_wm_stock_transfer_tcode.pdf
    • https://s3.amazonaws.com/bulozor/52890630829.pdf
    • https://s3.amazonaws.com/nuxomigo/gikawanuxuzesisa.pdf
    • http://rorazizaxaf.atwebpages.com/bobcat_709_backhoe_specs.pdf
    • https://s3.amazonaws.com/nuselufuzo/dawn_of_war_3_eldar_guide.pdf
    • https://s3.amazonaws.com/vukumesoj/ayushman_bharat_online_form.pdf
    • https://s3.amazonaws.com/tumasun/77033434958.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed9.bin
9d19430395849e9e017ac1e267b40fce6bf6cc6e9e6c24dbc737b4a21412afa3
pdf-font-stream PDF embedded font (sfnt) at offset 0xEED9 5136 bytes
font_01_sfnt_off00010021.bin
bb0530ef23449a81f5791782b64f62847c88bcfaaa0efe52ef2990854ad771f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10021 10524 bytes