Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1886ecfa7c684b…

MALICIOUS

PDF

68.0 KB Created: 2020-12-11 12:21:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 27d0826536488954eae2e0f9f5311670 SHA-1: 134e14fe5594200ef8d7e7eb4da0df8a024f976e SHA-256: 6e1886ecfa7c684b9d1ddb2d10bb64d91ca1558b97f101060803c44cdb853b38
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/123?utm_term=bedtime+stories+for+adults+to+fall+asleep+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4453747/normal_5fcd9d6d10faa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fce8e0e799940555acba95f/t/5fd167a2ad61ab58317de67d/1607559075604/21809701467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0495e31-9aa2-43bb-b443-adaacfb41f87/58983963513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df5462fd-74ef-4a88-b48c-65e15d381c29/school_girl_outfit_ideas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b54c9879-deed-4b5c-a818-1d2a3ac7e58e/ladevonibawizoxaga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c2adbc8-f1fd-49a9-aa2c-7814d8335124/7th_grade_team.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/349bf431-25d7-460b-af9a-654b89ae9632/42799946612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45442ba4-fc5a-4b8a-846e-37336d5ac477/supreme_calamitas_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a005b1f8-0b1b-4d08-97b8-3824a2217c78/94993009150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc10f6a8-67ed-4d2f-bcfd-ea2b0e26d5bf/bed_bath_and_beyond_dorm_list.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc342e327a199023ac4b189/t/5fced80b7c363627419eb62b/1607391246508/143158247.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1448ef7301f8b1097bc/t/5fc21baaf3de5e49b5ac7c02/1606556589612/55394190446.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3675ebe9b6939511ac1b2/t/5fc4ae9a2dd96f591881e58a/1606725274863/fundamentos_filosoficos_de_la_educacion_en_mexico.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cd95e9fc3622d53af778/t/5fc765b20623334b0c5fcc97/1606903218899/online_reading_lessons_for_1st_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b83f388-8a11-47dd-8d34-42effbef5180/95934311232.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_off0000cf8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8A 5236 bytes
SHA-256: bf7b6aba84554f468e33619c79e47ef6831d63c7066c848b6b931f57787cd638
font_01_sfnt_off0000e141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE141 9832 bytes
SHA-256: a5595084724bde5a467364f9177f37461e1b1b5304919e827cc25411359f2dc7

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