Malicious PDF — malware analysis report

Static analysis result for SHA-256 12239fd45f5cc6ce…

MALICIOUS

PDF

86.0 KB Created: 2021-02-26 13:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6e22284a1a8a272d8e1bbbdc3d7b345f SHA-1: d8afcdf2539ebace3e8f1a45c51cb10200ea0c25 SHA-256: 12239fd45f5cc6ce4f3f86463ff522ef80d4b4258f2f4bdb2c1018cc448b02f6
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The embedded URL, https://jottigo.ru/strik?utm_term=toro+power+max+724+oe+manual, is likely the primary payload delivery mechanism. Although no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further malware download.

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://jottigo.ru/strik?utm_term=toro+power+max+724+oe+manual PDF link annotation
    • http://sakulog.sportsontheweb.net/befekosomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470841/normal_6011bdf132d54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_5fe9ffaa126c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366664/normal_5fcb6fd08f2a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_6024717b548c8.pdfIn PDF document text
    • http://kolunikikirade.22web.org/self_mastery_the_way_of_the_heaven_born.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/sowewazulejewi/matlab_wavelet_transform_example.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/xadejuraropezemesi.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/mental_maths_for_class_1_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/bulma_form_input_width.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/snow_white_with_the_red_hair_obi_full_name.pdfIn PDF document text
    • http://zemoxatovasoga.rf.gd/tozifozovavemuxivoku.pdfIn PDF document text
    • http://sewesomepajava.epizy.com/71835694606.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/38182821963.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/lexadilaforilabilut.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/supplier_reconciliation_template_excel.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000100d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D1 5196 bytes
SHA-256: 3854bcb77c2e64afa64117d87012cfd2be2168fa02d86840506807f0e2e0e2af
font_01_sfnt_off0001127f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1127F 2252 bytes
SHA-256: ed3b2ef996c64a7bbcaab5eab0e32c8d546bb7e16db11198281d4a70f536a354
font_02_sfnt_off00011c46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C46 17408 bytes
SHA-256: a18b91d57071c47449a5b33f2f22ef360837921bbcd39f74ecdd8eae490e0c27

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