Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a145875e1bf74a…

MALICIOUS

PDF

101.5 KB Created: 2021-03-29 09:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7e74a483fcb008d889c9309a2094b621 SHA-1: 891164993ff20c09bba5808c53304bdd0f81a485 SHA-256: 76a145875e1bf74a34dece39de14319986cf97c9e264a67db698b478a43624a6
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics indicate it uses an SEO redirector with a lure related to 'Roald Dahl the witches original book' to likely facilitate phishing. The embedded URL points to a suspicious domain, suggesting it is used to deliver a malicious payload or redirect to a phishing site.

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://lozipotod.ru/strik?utm_term=roald+dahl+the+witches+original+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369311/normal_604fa61b00716.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485005/normal_6023e5051e665.pdfIn PDF document text
    • http://kepuvofege.22web.org/synthesis_and_decomposition_reactions_worksheet_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446643/normal_6009191a108bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463526/normal_6001f970b201f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380705/normal_604b456ecd6f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382952/normal_5fd28834d6df4.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/b06d1cf6-257c-4fe7-9799-acd9a1767ef9/voselewitulexesol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fa6d0f1-331e-4358-a86a-9b9fcc3216dc/where_is_thermal_fuse_on_maytag_centennial_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3934317-4fc3-4cba-816f-af05185680a5/how_to_get_drivers_license_in_maine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8638f84a-ea4d-48e6-9e76-62f9d5c4b62f/tajata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8960d41a-55a4-416b-85ba-c4c7268f2b3b/zetubizitozuxofamomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c6aaa9c-2079-4b1f-92fe-e4ea7728e0cf/39695315637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c6f5f60-d9bf-4555-b1ef-dbaf5832a69b/what_is_persuasive_communication_explain_with_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dacc983f-3d81-4bce-8e89-02221003a4de/what_film_to_use_for_polaroid_300.pdfIn PDF document text
    • http://taribizuka.epizy.com/42529265104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bfb8395-fefd-4553-97ed-429bfba510f5/how_to_use_descaler_on_nespresso_machine.pdfIn PDF document text
    • http://gegawuwiru.epizy.com/41684811759.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b98c46d-cc98-446f-92ba-6642a2f7c67a/beats_solo_3_wireless_black_friday_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a31205af-9f2c-4adf-94f1-4be6e10310fb/39877200835.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_off00014c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C71 5504 bytes
SHA-256: f4669b2095bda3b79b4355de8b67686f513db9ad551c8b13d72fa09eae4ac43e
font_01_sfnt_off00015f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F36 12340 bytes
SHA-256: 7dd2cd5f87c2eaf904bb462a42ab18489f0eb53dd3948a07905cb55816241279

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