Malicious PDF — malware analysis report

Static analysis result for SHA-256 370960e464038100…

MALICIOUS

PDF

43.0 KB Created: 2020-11-09 01:43:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 3982d929b904afe4c9f66a77cf479d89 SHA-1: 0bb9490534baaf8033d2f1925dd2f88155b5ac4c SHA-256: 370960e464038100d78c6c2c672a47d408a03014a3e48979be9940226704895a
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://trafffi.ru/aws?keyword=penny+half+life+simulation+lab+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5fa873bf24860.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://nowagukow.files.wordpress.com/2020/11/a_bra_that_fits.pdfIn PDF document text
    • https://rafawabu.files.wordpress.com/2020/11/how_does_scout_change_throughout_the.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cff8e9f8-3902-4012-b848-f0b81a0d6efa/widititevi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3e1a4e4-d7c3-4a2f-bcb9-16b693b87893/kosujowipisajudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60be3681-c83a-4c04-af7b-7c8c731c910d/finally_rich_album_zip.pdfIn PDF document text
    • https://fidunonip.files.wordpress.com/2020/11/madelizopididam.pdfIn PDF document text
    • https://defimoni.files.wordpress.com/2020/11/jigexorujebovub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50ca112e-4433-4de0-a2ba-88380e2ff3a5/nupagopapar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aef09fc9-35dc-4aaa-9d5e-c9d382bc48ff/73367858567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45a9ab1a-7da6-4966-83d7-67c724792369/vepenobigadulodobuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eacfdc94-2642-417f-b3ec-080529df6699/65593349463.pdfIn PDF document text
    • https://vazebaz.files.wordpress.com/2020/11/punoriven.pdfIn PDF document text
    • https://lopobajujij.files.wordpress.com/2020/11/70639563752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fe9bafa-5374-41aa-a698-74135c03c870/35642571917.pdfIn PDF document text
    • https://bajabilidafa.files.wordpress.com/2020/11/5462588545.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_off00006720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6720 5344 bytes
SHA-256: 7494f9db065c666ee82dcf9200af9d2eb098826c9b8685d38521f7cb15b2c339
font_01_sfnt_off0000793a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793A 11056 bytes
SHA-256: 80387b3849c1fb4ae697dc38147003970324f2919189d1d2c476275daee7c58c