Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0382030dd557a4e…

MALICIOUS

PDF

108.9 KB Created: 2021-02-16 14:19:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 01ed5724ebfcc2d61d7ea9b8d95b5800 SHA-1: 5325e7d63e874e823515b0f835b6f229c10bddd4 SHA-256: a0382030dd557a4e12338e630a07c7aed960c730f2e3c3616da805ac4cfdb37b
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/wix?keyword=matoya%2527s+cave+location'. The ML classifier also strongly flagged this PDF as malicious. Although no scripts were extracted, the presence of a malicious URL within the document body strongly suggests a phishing or malware delivery attempt, likely via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/wix?keyword=matoya%2527s+cave+location In PDF document text
    • https://cdn.sqhk.co/petebeki/RbvsjaL/elements_of_art_definitions_and_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/piwizogir/jjgjcgd/mission_to_mars_movie_download.pdfIn PDF document text
    • http://feruwikabi.iblogger.org/kepof.pdfIn PDF document text
    • http://kutakelipaxeb.22web.org/axial_flow_fans_and_compressors.pdfIn PDF document text
    • https://cdn.sqhk.co/nakijalufiw/ibjeIhh/nudorugidodu.pdfIn PDF document text
    • https://cdn.sqhk.co/toxodabatot/gfujfhb/solitaire_rules_for_dummies.pdfIn PDF document text
    • http://soinjaga.ru/voxofatow2zo.pdfIn PDF document text
    • http://mediaverifiedbadge.com/soneromobudezupoxagunenul1zsx.pdfIn PDF document text
    • http://itdiscount.pro/bachna_ae_haseeno_instrumental_ringtonefns0k.pdfIn PDF document text
    • http://yoga-italy.space/27964634877t5hlh.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/jiicbkJ/52936518790.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/muxegeza/smoky_mountains_leaf_color_report.pdfIn PDF document text
    • http://mijikudetixo.epizy.com/38878477201.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/zugipedoguxuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/livre_orthographe_pour_les_nuls.pdfIn PDF document text
    • http://defixudopa.rf.gd/48514915729.pdfIn PDF document text
    • http://lafasusatar.rf.gd/jelejuxinezupozebem.pdfIn PDF document text
    • http://sabinozugi.epizy.com/vidaxatevoluvakijup.pdfIn PDF document text
    • http://xusixuxoribixe.rf.gd/larelalila.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/business_information_group_inc_york_pa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000156c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156C5 3940 bytes
SHA-256: 52f5d81af55a006043f5ba4822493f794c49829887dc63320ab62b4abffdf652
font_01_sfnt_off000164c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164C4 4896 bytes
SHA-256: 59e0a5ffea6e9baa49d3358de0e8470dc44f989409ee568e87fca6a80bf20fad
font_02_sfnt_off0001759c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1759C 2108 bytes
SHA-256: 268c3c4930ae43a7e4466a298b23c1f644aa0e95b11bde7ea7efbfbc6c256078
font_03_sfnt_off00017ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17EC3 11272 bytes
SHA-256: 5f4f21922e6ee77353ccfb911361a0fa2103f88bc970289037c9cda8bafaa5fa

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