Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fbe06ae1eff7258…

MALICIOUS

PDF

76.0 KB Created: 2021-02-10 01:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7a2034e1d8255a3adf5a3cae1a9476da SHA-1: e60c0e9ac9012b691c54896ce1c776ba4c0914a7 SHA-256: 3fbe06ae1eff7258d03ae7eeff890ac078b5d558a787e4e3bda95a4a4b9b96e6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://yafferge.ru/wb?keyword=greatest%20common%20factor%20worksheet%20answers%20algebra%202 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411681/normal_6023076c06756.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388813/normal_5fe48155c76f7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459322/normal_5fc6dfc825f33.pdfIn PDF document text
    • http://nemekarasika.iblogger.org/ethereum_mining_rig_build_guide.pdfIn PDF document text
    • http://fogarapisow.22web.org/30422122442.pdfIn PDF document text
    • http://narezekopalezi.iblogger.org/kpmg_survey_of_corporate_responsibility_reporting.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387709/normal_600e3158d2a9e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fovelemuzawela.epizy.com/4780110762.pdfIn PDF document text
    • http://sitiwaruto.rf.gd/hydraulic_pump_pressure_differential_setting_guide.pdfIn PDF document text
    • http://buwaveb.rf.gd/android_google_map_fragment_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/marketing_intermediaries_group_of_answer_choices.pdfIn PDF document text
    • http://sidiwen.epizy.com/air_force_airmen_application_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/guitar_chords_for_popular_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/17750850995.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/fadanudebosovudinonarago.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_off0000e893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE893 5752 bytes
SHA-256: 79ed301c937674dbba6e28651d2506d5b7a5bc8ee11ceb7289433aee5de51d5b
font_01_sfnt_off0000fc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1F 10896 bytes
SHA-256: d78c2ff0358003b9d6c26d7ab3f490c55d6592d4a52a34890a83b6b723ae9ab4