Malicious PDF — malware analysis report

Static analysis result for SHA-256 90782c7a8a97f036…

MALICIOUS

PDF

76.3 KB Created: 2021-04-24 11:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c0b6cf687e7104261c27edad0176995b SHA-1: 9fe5c92f1b77f2d49f78ee79d16ca33e4b9e05d6 SHA-256: 90782c7a8a97f0360dd257b6a216f6340dcca9098cfde707b21b040c54ba713e
96 Risk Score

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-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://xajibur.ru/strik?utm_term=how+to+use+wrist+blood+pressure+cuff PDF link annotation
    • http://sallely.xyz/colorado_ballot_initiatives_2018_guidectav9.pdfIn PDF document text
    • http://wemexuj.22web.org/setbackground_java_android.pdfIn PDF document text
    • http://azules.ru/rezuwafetapoxutusigexarenrx8ns.pdfIn PDF document text
    • http://f1l3download.site/14821205195d9490.pdfIn PDF document text
    • https://cdn.sqhk.co/zujagepax/jgojdDK/vagilisozizok.pdfIn PDF document text
    • http://getfreecreditreport.info/mudajufonejosif6qf6h.pdfIn PDF document text
    • https://cdn.sqhk.co/xubewarow/jjG6y76/pocket_wardrobe_for_sale_in_sharjah.pdfIn PDF document text
    • http://russianpatentexpert.com/zelizitexegoreguziva50kcy.pdfIn PDF document text
    • http://wuruvuguje.22web.org/android_emulator_docker_linux.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/qiOefha/top_bollywood_music_sites.pdfIn PDF document text
    • https://cdn.sqhk.co/mizogujuzo/gd4AAuq/90296923036.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/gciihgY/luzelak.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/wutezigojuxi/adobe_photoshop_cc_2015_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/passport_renewal_online_application_form_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/reveditapusedubub.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/xupokudatekun.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/badang_full_movie_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/2116563404.pdfIn PDF document text
    • http://pifimat.epizy.com/39786730721.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_off0000eb8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8C 5132 bytes
SHA-256: d4f4d8891345c05b39ec07f3fca06d047f656d3e88089d013b15bfc010f8578b
font_01_sfnt_off0000fd1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1F 11600 bytes
SHA-256: cbe8bd14b3ae72b7076313e31cf1187aa9ae8b7dfd429317cb86bc08ea4b2213