Malicious PDF — malware analysis report

Static analysis result for SHA-256 72fd12bd0af1cb2b…

MALICIOUS

PDF

39.2 KB Created: 2020-10-04 12:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c979143905c439d86dff12559a5e377e SHA-1: 2a13b91289b81502894476a093fdb2859e88e927 SHA-256: 72fd12bd0af1cb2bf20406b20aa1a03ac661db7959d5806c39a7464456ffcd0d
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ggtraff.ru/strik?keyword=after+effect+tutorial+book+pdf In PDF document text
    • http://files.chicksthatrun.com/uploads/1/3/2/8/132814664/tejizujo.pdfIn PDF document text
    • http://lemoruwi.buenavistafamily.com/uploads/1/3/2/8/132815105/283d3d089ea20.pdfIn PDF document text
    • http://gidug.trmdesignco.com/uploads/1/3/1/4/131437886/bipem-ruzosula-nonij-tamux.pdfIn PDF document text
    • https://site-1039382.mozfiles.com/files/1039382/roxitajezifawunone.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/80929393541.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/65468691863.pdfIn PDF document text
    • https://site-1044024.mozfiles.com/files/1044024/zujozur.pdfIn PDF document text
    • https://site-1036632.mozfiles.com/files/1036632/biket.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
    • https://uploads.strikinglycdn.com/files/e5e1fa48-fbbc-4323-9cc1-d3940807a4d8/31765945794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/442ed70e-c8a9-4197-8a0f-818515e3a5e1/38677809614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e066ef81-9700-46bf-8c30-6180b260611c/pujevete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22e0cf8-0e6c-452f-89db-7968a4942100/63936859512.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E99 4940 bytes
SHA-256: e061a5b4e640b11ff46074189e677dcffb03a0178ad62f77e9eafb90e753e0a7
font_01_sfnt_off00005f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F76 10200 bytes
SHA-256: 119471bcc5d4a0f41770aa33448a2d82018860108ca598c1123e523f4b9a27d1
font_02_sfnt_off00008243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8243 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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