Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0aa642c2ec6973…

MALICIOUS

PDF

74.3 KB Created: 2020-11-17 11:23:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: fe304ca11af1c6e6bcce7e78264d0b17 SHA-1: 6875f6cff50750ae9e7105e2ab8d18253fad880b SHA-256: dd0aa642c2ec697368a01a7b99b8ca05a8ffef7792d2d8745e53a66b0eef7d7e
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafficel.ru/aws?utm_term=b.+ed+form+2018+rajasthan+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423460/normal_5f9e4261170d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408707/normal_5f93b412d5c2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403685/normal_5f9dbed034190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427504/normal_5fb2e15f0306c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372087/normal_5f8898682cf0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421934/normal_5f9eb2ffa4176.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea90a308-3ba5-4c46-8ab4-f1757ad185d0/simple_plan_discography_torrent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58810b52-0bdc-4367-9323-67ca4c20c729/japanese_style_bathrooms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f79b755-cdea-4658-bb44-ee0235826bb8/cnidaria_classification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01909563-e3d2-468a-88c5-8cc728de2781/nemomujatokubewalototop.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/15524747926.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/75021140465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e44a6581-4f89-4a2d-ba74-f086a653d6f4/biotek_synergy_h1.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC649 5612 bytes
SHA-256: 565358f55be33d3556432fdd0ebb9aa0072db2df7bbd13d96aac644a5020ee24
font_01_sfnt_off0000d93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93E 10492 bytes
SHA-256: 537a4c8e76310828224b6e327c34f035cc294ba35b4c7cfbd2b829d58ef17e4d
font_02_sfnt_off0000fcf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF3 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
font_03_sfnt_off00010af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF3 4044 bytes
SHA-256: fd236335072c1ceeffd0d0f3738ce2527fee238038a1d7b25ef97df16e306d53

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