Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee1f12f3e44a187…

MALICIOUS

PDF

46.6 KB Created: 2020-10-28 18:32:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7fbd667abe29e1c7c499d78d14380383 SHA-1: 986c13992fee98b19f7a6679bb03c67d68d0f7d9 SHA-256: fee1f12f3e44a187554a7c371ea17607f12802b30f673f115bb703dc12b618cb
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=bachmann+civil+war+confederate+train+set In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403408/normal_5f97b6870d801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410956/normal_5f94e267240f3.pdfIn PDF document text
    • https://ratomewupevo.weebly.com/uploads/1/3/4/2/134234569/7673475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_5f98cf2d4eeae.pdfIn PDF document text
    • https://berajuvexoru.weebly.com/uploads/1/3/1/8/131860787/gutofuwofuva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390330/normal_5f90edafe6b1e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000068bb.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000068bb.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00009e64.bin)
    • https://uploads.strikinglycdn.com/files/edf56a9d-7471-4df0-bd5d-572dbd2281aa/fazedo.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/81899764827.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/utilitarianism_vs_deontology.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/warupe.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/cateter_venoso_central_subclavio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec828b9f-3793-4c71-9079-b81f75de143e/34632261914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a794b401-d36a-4f94-9b9e-3a61a0978fbe/xuzufe.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/3178074247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7655ef8-342d-4df6-8669-e01aa588d3ad/89553420081.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/beniporalet.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/pdf_antibiotics_resistance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01f30ebf-b154-4f95-bd71-a82d813493d0/guvabolufubi.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/mufinetotexudanar.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/78703502394.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_off000068bb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BB 5248 bytes
SHA-256: d6e7933a4d4ca8dea1046483e50d869629c97bf74177b85fc056386062458ddb
font_01_sfnt_off00007a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A74 10556 bytes
SHA-256: 8ad3c5576809912d315bd0786a9bb1c8a7e661600af43b0567affcab6ae9e779
font_02_sfnt_off00009e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E64 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34