Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aeaa33d601b0956…

MALICIOUS

PDF

71.9 KB Created: 2020-12-05 18:03:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: af41a9fb7b3aa6c31f673eef023a1ad3 SHA-1: 9f687ea067e5cbe03d19c3f38aadf765c36bec07 SHA-256: 6aeaa33d601b0956424d3c8d2c69af3cb6bd48fac2d8e443a26bc4fb80a79da6
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://trafffi.ru/aws?utm_term=fun+reading+comprehension+worksheets+7th+grade PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5f949b85bd3d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458622/normal_5fc44651e8f35.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3689fc61-0acd-40bf-9a4c-7d2e0c80753d/injection_molding_handbook_hanser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15015174-1ec7-4b04-9702-075b477ff3dc/ff14_lakshmi_guide_deutsch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ff8631e-5645-4a61-a3d5-0285cdea48db/hoja_de_respuestas_en_blanco.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/i_am_not_alone_piano_sheet_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d0065e8e827d428d60b5/t/5fc1e0f8cb3e0f57719456f3/1606541562403/norton_antivirus_apk_full_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f19cb704-61ed-4f5e-9964-06b624e87e3f/rasaw.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/door_lock_installation_kit_dewalt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e209f43f-a306-495f-b9b9-5093218c7463/darak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90595f5c-207e-4043-8a7a-a15011bb5f0c/46226958123.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5510aa13a450bab11af48/t/5fc88b007ff5a343ebf829c6/1606978304853/jozugalokimonup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eca37bf4-688a-4883-85e9-446cb51998ed/umx_hotspot_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1651bc89e1c4b8fc1e357/t/5fc48bfc3c6ccf69f3f07013/1606716412523/81555191655.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c97e2bfb-d62e-4a8b-8c49-745b4f09737a/90706365305.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_off0000dc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC98 5648 bytes
SHA-256: d14592820a1091c431f3bc0027a103e8c83256b9569a64f8fc0a39877059f1b6
font_01_sfnt_off0000efbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBD 10156 bytes
SHA-256: 480eb169fcf4a4db2f017d168ab944ef8a5881b0ef886971cfd3000f178055dc

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