Malicious PDF — malware analysis report

Static analysis result for SHA-256 41770064f3d3a9c3…

MALICIOUS

PDF

73.8 KB Created: 2021-02-20 17:31:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e160391c6e08d81e322c6e8503734b03 SHA-1: c7b827e2ea545364221528cffc34343631e5bc78 SHA-256: 41770064f3d3a9c3cfbac8519e5f2186022c87db660e7efb34abad7d3a00e722
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://jacksth.ru/aws?utm_term=how+to+write+a+self+appraisal+examples PDF link annotation
    • http://trysoda.pro/mukusofudaneloct1pt.pdfIn PDF document text
    • http://capridigi.com/90959753734uu22k.pdfIn PDF document text
    • http://kamini33.ru/119627582973r4r2.pdfIn PDF document text
    • http://xojakipizixa.22web.org/ant_video_er_similar.pdfIn PDF document text
    • http://100p-f.ru/gatipomisafokomikusijemun9tqd.pdfIn PDF document text
    • http://help-violation.com/48761510683250f7.pdfIn PDF document text
    • http://zhigina.ru/41844044107ve305.pdfIn PDF document text
    • http://dragonflysagewellness.com/your_wish_meaning_in_bengali1xdyy.pdfIn PDF document text
    • http://ziviludemedo.iblogger.org/black_and_red_wallpaper_for_mobile.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/zabevog/desesaruguwigupu.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/marudafar.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/lesakisozewojegopiwevide.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/cisco_umbrella_investigate_datasheet.pdfIn PDF document text
    • http://degefoxovovi.epizy.com/what_to_do_when_you_are_unhappy_in_a_relationship.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/define_split_second_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/cleaning_services_brochure_template.pdfIn PDF document text
    • http://nemojasa.epizy.com/sat_answer_sheet_print_out.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_off0000e416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE416 5168 bytes
SHA-256: fdbe6c08eb8f62271c21a64a787c98f30586760358f7dead8adb3fcaa8b1edc3
font_01_sfnt_off0000f5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AA 10788 bytes
SHA-256: 9eb96d6a9674eccafe272d20ec9acd58fc95b9381fff91e0a59835b22a2d13c8