Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a6621ad908f13c…

MALICIOUS

PDF

76.8 KB Created: 2021-05-03 11:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0d80478bd97b3c4d5545a678e6a7baec SHA-1: c1853adfcde8bbe68cffa99273563bd1138306ff SHA-256: b3a6621ad908f13ca503fa5514d95d5e21bd3330a823ec84dae24af2014c1cf5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://resalured.ru/strik?utm_term=how+to+heal+your+boyfriends+broken+heart PDF link annotation
    • http://vabuxobetarewo.22web.org/rovesaxozosorarokowivipef.pdfIn PDF document text
    • http://55571.ru/coyuchi_organic_sheetsbly2x.pdfIn PDF document text
    • http://fajiriduxir.medianewsonline.com/vusozuxowozixilogegapo.pdfIn PDF document text
    • http://instofficial.online/75722908823v0q20.pdfIn PDF document text
    • http://7lessons.space/541796146686870z.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/buwosevax/7233551739.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/english_textbook_for_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d779c0f1-69d8-44b9-b5b6-23a170405c89/simplicity_owners_forum.pdfIn PDF document text
    • http://vawanumezal.onlinewebshop.net/how_to_write_rationale_of_the_study.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/67398924564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2116ce2a-c4ae-4251-a21a-8cd0bb0f66a4/38249441724.pdfIn PDF document text
    • http://kuzojepume.epizy.com/gujapupasonuzo.pdfIn PDF document text
    • http://zuvaxideta.rf.gd/manet_mobile_ad_hoc_network.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/28546738644.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/jasozeto.pdfIn PDF document text
    • http://defakulid.atwebpages.com/apastamba_sutra_sanskrit.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/36114292283.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/28800232755.pdfIn PDF document text
    • http://lagixilutami.rf.gd/anganwadi_job_form_in_delhi_2019.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_off0000ef37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF37 5352 bytes
SHA-256: 1094df49b463f1a24e1b6a960ee5611ca6925894fd70529f9e99baf1b7acff0c
font_01_sfnt_off00010179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10179 10608 bytes
SHA-256: 68d635463f6a2b2261effe23027a8cc646cb6f754fa0af1f560a734af7263788

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