Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bfee1bb15f258ec…

MALICIOUS

PDF

77.8 KB Created: 2021-03-18 19:03:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 36f4d2e828c60cb4ddef684b4859ee7b SHA-1: 23620330a71e3b47058a9bc1cfb44ff7481b494e SHA-256: 3bfee1bb15f258ec7f96eb368957f5840bbdf703c5c204a9c6edc57add88c4c8
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to various domains. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics confirm its malicious nature, with ClamAV identifying it as Pdf.Phishing.Trojan. While no scripts were explicitly extracted, the presence of embedded URIs and the overall structure suggest a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/strik?utm_term=ti+nspire+cas+ipad+manual PDF link annotation
    • http://mumewozifuvab.iblogger.org/ancient_greece_map_quiz.pdfIn PDF document text
    • http://bugosegu.scienceontheweb.net/56745810283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481422/normal_600acdf7c09a1.pdfIn PDF document text
    • http://regivag.iblogger.org/is_the_rainbow_vacuum_an_air_purifier.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_60464cb6717d8.pdfIn PDF document text
    • http://bawikivogo.22web.org/does_nicholas_sparks_have_a_new_book_coming_out_in_2020.pdfIn PDF document text
    • http://nafaguxidu.iblogger.org/80939986418.pdfIn PDF document text
    • https://xulakuvoloja.weebly.com/uploads/1/3/0/8/130813987/lipavonasin.pdfIn PDF document text
    • http://tawaguf.scienceontheweb.net/what_is_the_purpose_of_using_a_cause_and_effect_text_structure_brainly.pdfIn PDF document text
    • https://gowoxavakuf.weebly.com/uploads/1/3/4/7/134702457/f1792254693eb.pdfIn PDF document text
    • http://tinipen.medianewsonline.com/technical_support_interview_questions_download.pdfIn PDF document text
    • http://nafewid.sportsontheweb.net/kadaxem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481161/normal_603a5c06a4c4e.pdfIn PDF document text
    • https://jokuvaput.weebly.com/uploads/1/3/4/5/134589987/4774900.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501791/normal_6045fa8ad4e39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dotejujuzobok.rf.gd/43249045092.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/vopuxodemalazutir.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/fizefodu.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/a_court_of_thorns_and_roses_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/jedat.pdfIn PDF document text
    • http://mivurukelino.onlinewebshop.net/unir_archivos_online_sin_limite.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/how_to_review_photos_on_facebook.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/wasuzuje.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/osrs_inferno_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/2017_cadillac_escalade_esv_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_off0000f0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AC 5168 bytes
SHA-256: eb661f6617e98d0429252627a49f71fe54899d3225d1f967a4281d228c4f5ef2
font_01_sfnt_off00010226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10226 11660 bytes
SHA-256: 96ca5f1e17a45066d124422dd5cd06504c971d0a928d6f3823f9ea7b8210eb18

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