Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab15c62ff805052b…

MALICIOUS

PDF

66.5 KB Created: 2021-02-27 12:46:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 11cf69f9355a479d28e8e2b9d9f53131 SHA-1: f91633c7aef252a427575223db47653e28792cdf SHA-256: ab15c62ff805052b5f19dd7bf25b171069220e05e28aa9c6c3eeff0fc3f41539
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that appears to be part of a lure, disguised as a product advertisement for a 'Dewalt 20v drill set brushless'. The presence of this URL and the nature of the detection strongly suggest a phishing or malware distribution attempt.

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://jottigo.ru/strik?utm_term=dewalt+20v+drill+set+brushless PDF link annotation
    • http://vekisonoloze.sportsontheweb.net/bonipidekuxoweb.pdfIn PDF document text
    • http://yarrebitteh.online/buy_slot_machines_near_mewdfa6.pdfIn PDF document text
    • http://amst-watch-v1.club/85263172060cyt89.pdfIn PDF document text
    • http://everydays.space/edudel_date_sheet_2019_sa17j6k9.pdfIn PDF document text
    • http://reform-st.ru/19263659355qlfqy.pdfIn PDF document text
    • http://kisedevobale.22web.org/52152370295.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jekedizineropo.rf.gd/panel_discussion_format_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/17656290429.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/33682701937.pdfIn PDF document text
    • http://juvugevumeki.epizy.com/benazotixuroleminupalu.pdfIn PDF document text
    • http://piwolimosopobu.myartsonline.com/what_is_curriculum_education_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/73068092845.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/zewafuta.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/sipevifelorigiwunu.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/axis_mutual_fund_nomination_registration_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/bamozunetoj.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/13465669969.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/law_of_succession_act_kenya.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_off0000c73b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC73B 5476 bytes
SHA-256: 765bc191e8f01a324bbce30f89a40707a7096480383debea7963936110ac5ef0
font_01_sfnt_off0000d9eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EB 9704 bytes
SHA-256: c837db4343edc0e20ce8073c0e34c8a35b1606fd1856c847d632a5152b46070c

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