Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceff7d8f236fd224…

MALICIOUS

PDF

74.7 KB Created: 2021-02-18 03:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: ee80b3b2223c1dfe03c2377c5bba7d43 SHA-1: 5724dd92188a4e0663f9e90be56a0d0acd563216 SHA-256: ceff7d8f236fd224d870f5d17f34017310b6466affce3e9ff8e6da24e7edf644
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although the document body is heavily obfuscated, the presence of a malicious URL suggests the intent is to redirect the user to a harmful site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://crophysi.ru/strik?utm_term=how+to+clean+oven+ge In PDF document text
    • http://kernig.pro/norenubor5jf0j.pdfIn PDF document text
    • http://bitsracing.net/30318392851eq896.pdfIn PDF document text
    • http://ryukzak.digital/wrong_turn_2_in_hindi_480p_download5mjaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465386/normal_6018136a39abd.pdfIn PDF document text
    • http://fiwadewemizoti.iblogger.org/celulas_madre_del_cordon_umbilical.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445114/normal_5fedb192ab19b.pdfIn PDF document text
    • http://padlamadla.site/the_night_before_christmas_film_netflixu05j2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410678/normal_5fddbb27dc469.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/jexijer/30614563132.pdfIn PDF document text
    • http://jikolelekad.epizy.com/rosary_guide_thursday.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/promoting_health_a_practical_guide_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/amd_driver_rx_580.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/40774029376.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_off0000e831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE831 4808 bytes
SHA-256: 4ebe0d2395bd244b54d86a4f8d30ac6f040f7ab5b647a7a2ab05fdff11b65979
font_01_sfnt_off0000f8bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BB 10600 bytes
SHA-256: 3cc832013067482097045c512951061c5c31c5822a30af60149b35e3b6bd832c

Open this report in the interactive analyzer, or submit your own file for analysis.