Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fb7cca14c07ff36…

MALICIOUS

PDF

70.4 KB Created: 2021-04-30 11:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c3a895223a47c476ba2ef069abf4a479 SHA-1: 5b2392f5d6d623ac89bd68574983f891f51bf8db SHA-256: 9fb7cca14c07ff36ba4a11f6b8bf05fae203baeb3f82525402945443983993ff
96 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely for phishing purposes. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://xezojetit.ru/strik?utm_term=what+is+dual+simplex+method PDF link annotation
    • https://cdn.sqhk.co/mewovegid/jhiSje7/20914891747.pdfIn PDF document text
    • http://dopogabijup.mywebcommunity.org/cezar_roberto_bitencourt_tratado_de_direito_penal.pdfIn PDF document text
    • https://cdn.sqhk.co/nexapebevux/fG8ge5p/33361888680.pdfIn PDF document text
    • http://hookup154.fun/how_to_work_fingertip_pulse_oximeterkebln.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwapusumoge/eUihC1x/5909427411.pdfIn PDF document text
    • http://sport-stavki.fun/fogely70zd.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/Y7jiGcZ/battle_chasers_nightwar_superkraft_2.pdfIn PDF document text
    • http://verifedform.com/42re_reman_transmissionepuq7.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/9EUgicr/48952305823.pdfIn PDF document text
    • http://azorocheat1.xyz/91893719134rwtn1.pdfIn PDF document text
    • http://fofolep.mywebcommunity.org/surah_mulk_english_translation_youtube.pdfIn PDF document text
    • http://santaparker.store/bowolizeterum8s09n.pdfIn PDF document text
    • http://strongcreditscore.info/letter_b_worksheets_toddlersahq0s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rukevoseworo.rf.gd/54928491157.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/8884666194.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/71792823069.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/fobizina.pdfIn PDF document text
    • http://xifimerin.onlinewebshop.net/learning_english_vocabulary.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/fexewidepu.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/how_to_port_vi_to_jio_online.pdfIn PDF document text
    • http://sufelubunat.epizy.com/campbell_hausfeld_26_gallon_air_compressor_manual.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_off0000d524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD524 5184 bytes
SHA-256: 37ac79e272f4fe26792a61d4ee68fdf184fa251f23af6821ed4b1e22221d88aa
font_01_sfnt_off0000e6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B2 11040 bytes
SHA-256: 4427dbad25caf9ce52bb9190fbeb897ccd833b1a4ded935c282f913ea976bf65

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