Malicious PDF — malware analysis report

Static analysis result for SHA-256 6992cee8bde48cb9…

MALICIOUS

PDF

69.5 KB Created: 2020-11-28 03:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1e473be60d34db6a95856100936b3ec9 SHA-1: 78948850eb9d2d3fd415846ba9541c0008e65771 SHA-256: 6992cee8bde48cb944f1387103ff02f0b04258f946e60224199c36da5aef4275
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, characteristic of a link farm or phishing lure, directing users to potentially malicious websites. The heuristic 'PDF_SEO_LINK_FARM' and the presence of many external URLs strongly suggest a phishing or scamming attempt. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs indicate an attempt to redirect users for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffset.ru/aws?utm_term=best+samsung+android+phone+under+25000 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464722/normal_5fa57c97a6395.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381752/normal_5fa853036161a.pdfIn PDF document text
    • https://vuxojamobepu.weebly.com/uploads/1/3/4/3/134333522/tipabovojeb-fakigebekutolep-nuxikonu.pdfIn PDF document text
    • https://dujenavu.weebly.com/uploads/1/3/4/3/134366251/kaluteporu-sixul-subogaxaxi-viregutolok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492286/normal_5fbe6a550065c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387711/normal_5fa4f03b570ca.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/c8c7891c-65bf-4d8d-a7f8-67cc79234c3e/madden_mobile_16_hack_no_survey_no_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7b2396f-2a6d-4dce-a7db-8c3ed20842f4/download_psiphon_4_for_windows_xp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/237e4e2c-5550-4d2c-b9f6-bb9fc6b86e1d/43507211234.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12041f93-1ec4-40d9-8df7-a9729e858290/xevifovutofefizuzok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a252c59-2386-46c9-b7ea-80bb5d3ba928/14206820131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4cd0536-2ce9-467d-a5f2-616416819671/42338062362.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_off0000cf54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF54 5788 bytes
SHA-256: 3971a0bfdfca6fe72f1bdc227438e4b57a28e106a555b3d63d035e739ba7c3d5
font_01_sfnt_off0000e2e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E4 11136 bytes
SHA-256: e61351b3c805519937c130c2d8189a1dcaf983a6b952325a74c0b5c480a56fe7

Open this report in the interactive analyzer, or submit your own file for analysis.