Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d745eafdbe3152f…

MALICIOUS

PDF

52.0 KB Created: 2020-11-07 17:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 936bb0e61e441bf6a2eae2af68bec0b5 SHA-1: 37b9e3cd68ac91f7e3daf225e10c878c31719f1d SHA-256: 0d745eafdbe3152f9482767df2de36bbb5a844a5307be857c5777b34a28f2fac
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffset.ru/123?keyword=get+tik+tok+fans+without+verification PDF link annotation
    • https://wekegakusujesal.weebly.com/uploads/1/3/4/2/134266445/mobamub-gefisifijeg-misabidinuro.pdfIn PDF document text
    • https://savakorudefipe.weebly.com/uploads/1/3/2/3/132303238/zamopot_palezufepo_japise.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.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/48ec283c-c135-401b-b0a4-fe7280f0eaa1/2741294712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d025983b-c2d1-4c97-b109-b57a56504cfd/57548565156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/365394c8-a3a8-4007-9597-b33320c586c4/38305757558.pdfIn PDF document text
    • https://firijidu.files.wordpress.com/2020/11/23685671370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aacf0257-6506-441d-a1ae-48b9421a0d71/aca_conference_2020_counseling.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/53827726643.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/aquacal_heatwave_superquiet_troubleshooting.pdfIn PDF document text
    • https://metevavub.files.wordpress.com/2020/11/rukepusedikef.pdfIn PDF document text
    • https://kubodal.files.wordpress.com/2020/11/68385468255.pdfIn PDF document text
    • https://fodabijiwifi.files.wordpress.com/2020/11/97474348491.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fe5fff6-7223-4d9b-9c07-074aac3ba6a8/dejozi.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009e65.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9E65 21644 bytes
SHA-256: 710a5b5423454a51b8cb04af5192e0acd38994f70fc83051e8ebb6857543a3e4
font_00_sfnt_off00006a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A89 5184 bytes
SHA-256: 36baaf6fcae16b607fc1eca37e2ea056f46db5b5f3827f9ecf24c2a900bc6dd7
font_01_sfnt_off00007c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4A 9924 bytes
SHA-256: a01ae183da3baef95a0aadeb7cc21b67b5cdcb103761af4278e94b995ce8381c

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