Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c321e34dd1e8f5…

MALICIOUS

PDF

40.0 KB Created: 2020-11-06 21:48:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 11fdb101ae097927e8d03db6344c2fc6 SHA-1: 10068792a9e92bda286c1b00abbc1c47ab26b311 SHA-256: b6c321e34dd1e8f570e0651114795fdb00b8edfcbca6afe79efcd3d8250aea42
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://traffine.ru/aws?keyword=light+duty+work+excuse+letter+from+doctor In PDF document text
    • https://dumunevebule.weebly.com/uploads/1/3/0/8/130874169/gonuputup.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/a7d8f7bc6f76ec3.pdfIn PDF document text
    • https://zosopomejunij.weebly.com/uploads/1/3/4/0/134040517/wepupe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://levagiw.files.wordpress.com/2020/11/71505709729.pdfIn PDF document text
    • https://nagerare.files.wordpress.com/2020/11/38945102732.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/bescherelle_french_verbs.pdfIn PDF document text
    • https://gojifededub.files.wordpress.com/2020/11/ziziraduxixunox.pdfIn PDF document text
    • https://fizafadolozu.files.wordpress.com/2020/11/31713389540.pdfIn PDF document text
    • https://jojisawonu.files.wordpress.com/2020/11/97644884689.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/orono_middle_school_maine.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/40867087970.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/color_changing_mugs_bulk.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_off0000604c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604C 5492 bytes
SHA-256: 768e7c2d237e7a061e05569fa3a63f0c292013bd1c69d6fd37b2cfd9bf8c596a
font_01_sfnt_off000072f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F9 9528 bytes
SHA-256: 0a2d14bbb2e8a9c13e8022a58ab517c5a8258e68d47675d56e5fde9110be3ac3