Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef80e70e136dbe2…

MALICIOUS

PDF

73.6 KB Created: 2021-02-25 07:11:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 32b06d8fb07922bea7e1a68775c47b62 SHA-1: bc718d97831c25231725969154103057a6ff9f74 SHA-256: 1ef80e70e136dbe2191fcae0abff8bbc07fb1f45ea11d56cc4d8cb0d8a003a0c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to direct users to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL heuristic point towards a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/wb?keyword=how%20to%20connect%20dell%20to%20monitor In PDF document text
    • http://whysmall.space/disaster_area_inspection_report_form1ni7n.pdfIn PDF document text
    • http://magnifioco.site/global_initiative_for_asthma_gina_guidelines_20181bwt0.pdfIn PDF document text
    • http://creditstar-kabinet.com/distance_time_graph_practice_problems_worksheet_answerslgm27.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/biwubeleba/bebas_neue_pro_book.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/heliogabalo_artaud.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/mammoth_lakes_restaurants_and_dining_guide.pdfIn PDF document text
    • http://webimonok.epizy.com/basilico_pizza_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/81262043446.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/cymera_photo_editor_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/arrange_online_free.pdfIn PDF document text
    • http://begosene.epizy.com/notice_agenda_and_minutes_of_meeting.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/51886739258.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/exemple_attestation_de_travail_maroc.pdfIn PDF document text
    • http://numumodi.epizy.com/mezazojisolaxubif.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_off0000e290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE290 4752 bytes
SHA-256: 210c3d6cc99e7b571db135f2d1b2caad6819b09b6e6a7957022e720c10eb41ba
font_01_sfnt_off0000f2ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AE 11812 bytes
SHA-256: 53592dc3edd38ecf25f8c8707d6c7409cc99bbb71dfcb4e79f3275019d4899c7

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