Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b3db5b7f2b98b54…

MALICIOUS

PDF

74.7 KB Created: 2021-02-13 03:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 89221920d14cb9cea4109459b9fcbfc5 SHA-1: d78d83966ec4d7c2e96d5a9f43ff85aebe3f16f0 SHA-256: 6b3db5b7f2b98b54745c457097f23032546b882094f9c3670134eaa1d7cf1a69
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://leonvi.ru/wix?keyword=2008+ezgo+rxv+troubleshooting+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425917/normal_601a9d3753e3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415527/normal_5fceb5a1b0528.pdfIn PDF document text
    • http://bitcoins-profits.com/rabbit_running_fast_around_room9igiy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424341/normal_5ff481e1b3928.pdfIn PDF document text
    • https://cdn.sqhk.co/nesorosuxim/u0jdijf/faves.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/dgijc0W/frndly_tv_channel_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405430/normal_6014c9b9da199.pdfIn PDF document text
    • https://cdn.sqhk.co/kipezipilojo/gcZCqHG/nail_biting_skin_infection.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/hVidhcI/subway_surfers_unblocked_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gesafafo/bSKjgja/the_university_of_hong_kong_zip_code.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/numegubowalonan/78256217949.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/10931415324.pdfIn PDF document text
    • http://muwiliwus.epizy.com/pefitugidadadokirupu.pdfIn PDF document text
    • http://pupovedifa.rf.gd/android_tv_sony_bravia_forum.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_off0000e74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74F 5568 bytes
SHA-256: 6c9ec0ddc50db44c5216738d2dfff2bedd21712777c1e43e012fcdf4c1dc6147
font_01_sfnt_off0000fa42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA42 10440 bytes
SHA-256: bb9846112dfafbf7535778b2dfd746f58cbb9fac8e0d94179391ac67ab434800