Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d6e9e79bdac7d9…

MALICIOUS

PDF

44.5 KB Created: 2020-10-29 09:36:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e6ef3a293e0fdf764247c614acbf1991 SHA-1: 516051de239e77c31f197de792221905abdf92d1 SHA-256: 15d6e9e79bdac7d94b464347ef506fd3eec9dd057c39a404f6ed6e7fb0adb388
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://cctraff.ru/aws?keyword=beeman+rs2+parts+diagram In PDF document text
    • https://kilejotiwig.weebly.com/uploads/1/3/1/4/131406519/9661115.pdfIn PDF document text
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/gumuximizobur.pdfIn PDF document text
    • https://xukanimuwuvam.weebly.com/uploads/1/3/2/6/132696198/delilimu.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/vefewesipelal-rosurajo-kedefer-samibasejaf.pdfIn PDF document text
    • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/8240007.pdfIn PDF document text
    • https://tajuzoliv.weebly.com/uploads/1/3/4/3/134359899/d43071.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/favapijos.pdfIn PDF document text
    • https://vuxofuta.weebly.com/uploads/1/3/4/2/134235669/xonataw.pdfIn PDF document text
    • https://bizetuxerupa.weebly.com/uploads/1/3/0/8/130873791/ed33bbb79.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/6327393.pdfIn PDF document text
    • https://fomomeku.weebly.com/uploads/1/3/2/7/132712435/jemosi_pafuruxofuta_gumowadolomiweb_wisepera.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/09d2cae728.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006020.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006020.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off000096f9.bin)
    • https://uploads.strikinglycdn.com/files/5ff5669a-7729-48af-8d3d-43be9233684d/25446452309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba87841a-5ecd-4589-8767-f16a86cf1357/88801078789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/191d0a57-cdb1-41f2-8540-f99fd8e2eb99/pijomarumovurik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc044d76-02b5-4eb2-b054-7c0f479759c8/sutib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd813d48-c947-4467-b3f8-33b30c480a79/nomunivosuluropabuluxodo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f6cd879-b448-4fd9-8161-f91ec8e6a7d4/papebota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84eb8288-1164-49db-934e-6ded60df9111/war_against_all_puerto_rican_espaol.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 extracted file (font_00_sfnt_off00006020.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6020 5104 bytes
SHA-256: bddb0ce5bd3769da98b69a55cc782223ba6760eaee23372c2ee6f27db8751ade
font_01_sfnt_off00007155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7155 11392 bytes
SHA-256: de0aca564b1205782b9b4dac5b35fed1847014635cd7272fe72e9dc69476db41
font_02_sfnt_off000096f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96F9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378