Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e06da08e69837b…

MALICIOUS

PDF

77.9 KB Created: 2021-03-11 08:24:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0351a9025d9bd5141f6aa4c5dac60aaf SHA-1: b2efc76cc1ce556343c0a06dc969113fe02438c6 SHA-256: 15e06da08e69837bbf3373f44bf3230639ebf9edc0631baf22a5a730fe7e0a95
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. It contains an embedded URL that appears to be a lure, disguised as an academic resource. The presence of embedded URLs and the overall detection by security tools suggest this document is part of a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/award?keyword=algebra+2+math+book+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419206/normal_5fe9d6160194d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455907/normal_6004cb852ea4b.pdfIn PDF document text
    • http://reassurez-moi-fr.info/869381816373q0fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418565/normal_600069d766f61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412999/normal_5ffe8b29590db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383138/normal_5fe2b216da532.pdfIn PDF document text
    • http://fatadakar.iblogger.org/raxisufepamanizalo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456712/normal_60149ce0b49a9.pdfIn PDF document text
    • http://myirn.icu/popular_car_drivingl3ngc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377706/normal_5ff03d637611d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383302/normal_604826964e88e.pdfIn PDF document text
    • http://lisolu.org/double_bed_bedsheet_flipkart1g34w.pdfIn PDF document text
    • http://puzotupisebi.66ghz.com/petol.pdfIn PDF document text
    • http://orbitan.fun/customer_service_week_lost_package_answerhpm4o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://raxusitusumulag.rf.gd/tamilrockers_2009_tamil_movie_hd.pdfIn PDF document text
    • http://vizomokirasu.epizy.com/xakerojemiwiw.pdfIn PDF document text
    • http://gofuwupe.epizy.com/tifijavarezoxofaki.pdfIn PDF document text
    • http://dadosekim.epizy.com/44855542240.pdfIn PDF document text
    • http://lopumupukerodu.epizy.com/junji_ito_art_book_ikei_sekai.pdfIn PDF document text
    • http://pemuginikuj.epizy.com/tilexefivagenevexakifosag.pdfIn PDF document text
    • http://wowawese.rf.gd/88625797217.pdfIn PDF document text
    • http://nigukeja.epizy.com/tv_guide_right_now_usa.pdfIn PDF document text
    • http://kipawewori.epizy.com/zuxujigexadijekolas.pdfIn PDF document text
    • http://zopefunexot.epizy.com/the_dark_elf_trilogy_review.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_off0000f44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44D 5604 bytes
SHA-256: 4f4921146b978adc7864779f1dd780f349d6c827aef610c49caf3cb1b60d1e5f
font_01_sfnt_off0001072f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1072F 10160 bytes
SHA-256: 3eca726c95d522dcfef23731c22a1b823ec67dec1e024bd6c2e4f652c8747eb8

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