Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7bf4314ab38af70…

MALICIOUS

PDF

73.1 KB Created: 2020-11-10 10:45:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d3ce9d0d4cfb8beed84c38da81963ade SHA-1: 8be7253fc1256d762ecaec1b90085df75f179f47 SHA-256: b7bf4314ab38af7081c1d06a1372a4fb18dcb82c8900b6495e8282f546f42eb0
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. The document body contains a URL that appears to be a lure, directing users to a suspicious domain. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest it's designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?keyword=roblox+studio+wikipedia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416660/normal_5f95e13f223c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/10707765098.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/foroduj.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/59344825130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1804f055-0dc4-4486-8c95-ec0079f60d8e/poratokosominomavolem.pdfIn PDF document text
    • https://s3.amazonaws.com/tabagelufazafew/gall_bladder_meridian_points.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/33214588327.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/wupupejubugomabozuvibe.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/88450243936.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/pulawonenuvarudod.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/62918478878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/250d88ea-e28b-44c9-93c7-6575f7c18b33/aruba_acma_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a6d6aa1-473a-44aa-b1f8-a868bf88c2e5/kexafanenisovelox.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_off0000df9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9A 5228 bytes
SHA-256: 8637805f681e13f5abd14429f15a74df71383a06066c5d7ef3ff6ed4deec376c
font_01_sfnt_off0000f18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18C 11340 bytes
SHA-256: 7560fac666356174f6a6e7424b374e84abd747c77cca919b47e4f04aaae2d513