Malicious PDF — malware analysis report

Static analysis result for SHA-256 d369ff2fc6a3a209…

MALICIOUS

PDF

70.5 KB Created: 2021-03-09 17:04:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d1d7eb1cb5db285dcfe84f0bc80722af SHA-1: 00d5bb507447640fc6771c0afb03c29fbeeeb4c6 SHA-256: d369ff2fc6a3a2092b2d9c0fb85ae89a44324c7320126df4fa9b88c6013023d0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/award?keyword=livro+de+carpintaria+e+marcenaria+pdf PDF link annotation
    • http://gopidap.scienceontheweb.net/80823880229.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464319/normal_5fd6a929a3732.pdfIn PDF document text
    • https://kenufipafalenar.weebly.com/uploads/1/3/4/6/134616414/kuwavi.pdfIn PDF document text
    • https://julubagarod.weebly.com/uploads/1/3/2/6/132695517/vokelafexuke.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/explain_the_four_required_elements_of_a_valid_contract.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/neleremidofatej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500893/normal_5fdf21a0bdc40.pdfIn PDF document text
    • http://fudazozotakaxal.mywebcommunity.org/why_do_i_get_broken_blood_vessels_in_my_eyes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425010/normal_60230a9679d54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485173/normal_601e499460a90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446401/normal_5ff5da8eb9f42.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/how_do_you_prepare_for_a_competency_based_interview.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3ecb585b-79b8-4502-8567-d9a17299c5c1.filesusr.com/ugd/4b874d_abd0fd6392d140c2887e262f18db324f.pdf?index=trueIn PDF document text
    • https://5090c2af-253d-40c3-bfb7-942fc6db26b0.filesusr.com/ugd/0511f5_2094bfff19344149893efefdd4562b4b.pdf?index=trueIn PDF document text
    • https://4f65501f-cdae-4966-b9db-49b15ad9d196.filesusr.com/ugd/52b593_d77f1a97410e433cb69bf6293bf0cb74.pdf?index=trueIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/gun_defense_classes_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2711c047-7078-4472-ada0-d2a02bcd48c0/21497419172.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0b933b6-38b2-4fd6-a48f-dcb2d4f383d5/38442005735.pdfIn PDF document text
    • https://189c2d36-84ff-4b81-9465-96c33c1d3b91.filesusr.com/ugd/35ddae_c7abcb6486b74f35bced96f47e8eb4e6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5261e76d-32ea-4342-b743-8081e9f87c4a/what_are_the_causes_of_conflicts_in_africa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/159f3701-db05-481b-baa0-e608af025863/thinking_map_examples.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_off0000d469.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD469 5092 bytes
SHA-256: f5fd3e7f654d117be940d1fc016556560e5a2184bfdc6a61a63b8be104e7ef02
font_01_sfnt_off0000e5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B6 12132 bytes
SHA-256: febac14e6b3d82a88a4131be21f115e2ffaaf55c539b04b67c2b17e8cfad1019