Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad86f876a6119b9d…

MALICIOUS

PDF

48.2 KB Created: 2020-10-26 14:01:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-28
MD5: 25de35a816cf2d797501ebc098784cac SHA-1: e919cc4f239ee139b8d31e5d7276c9f8f3582b0f SHA-256: ad86f876a6119b9d252fb22730a8abbd80ed29365c5719528d9ea42d662569a7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a link farm infrastructure. One of the primary links directs to a known malicious redirector, suggesting an attempt to lead users to harmful content. The document's structure and content indicate a likely phishing or scam attempt leveraging SEO techniques to disguise malicious intent.

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 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.
  • 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/pify?keyword=tomografia+de+impedancia+el%25C3%25A9trica+pdf In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/wowabaxisefidet-nikuvajekibesim-napoxalapa.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/8009155.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/2b41c7a99c.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/zotusu.pdfIn PDF document text
    • https://gupupekulumo.weebly.com/uploads/1/3/4/1/134108922/tuwepikujofufozokaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369173/normal_5f87ea2a77cda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_5f9089dec7dee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368477/normal_5f8dd51cd1740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f9379a5c1071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377379/normal_5f8a7a53d80ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385852/normal_5f8e2e9e141e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388181/normal_5f91283122bf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369638/normal_5f88b70537ca7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403408/normal_5f94d671cc639.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/84a0e3dd-dbea-4647-ba97-33518777884a/rafiresakav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80162612-b5f5-497a-9153-81d96a48f047/raraxule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6e876a-0e38-47e7-80b9-379d976523aa/9254028184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2014d4e5-368e-4a5f-bb6d-097630ca998e/71401811988.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78b47349-67eb-4c73-8223-7e67de23744a/58791659441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffdce990-6538-46b3-82a7-a4e5ea1137f1/xefefanoviva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cf61e05-20ec-4c8c-909a-e0e0ee1b5e80/losogubosup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db93e99a-c715-4d8f-9b52-91a6480dc7c5/10974445187.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_off000077cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CD 5388 bytes
SHA-256: e64499fa44d080d2223853cd38e8a87ca8cf281ae37c622afae099a56b302882
font_01_sfnt_off000089c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C7 12756 bytes
SHA-256: 4710263f32f39cc689fa6896f63e5733f97b76cd6e3b8b7a0fcef6e71f4ca5e4

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