Malicious PDF — malware analysis report

Static analysis result for SHA-256 12b3379a1aad17cc…

MALICIOUS

PDF

74.5 KB Created: 2021-02-20 04:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f1020d18430b21562f44a552eaa32afb SHA-1: 749b0d2d1307d11b30d547cf9c01721dcea02792 SHA-256: 12b3379a1aad17cc7d76705305c43e7874417f77d1f7eefcd183e313b36792b5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL pointing to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness, classifying it as a phishing trojan. While no scripts were explicitly extracted, the nature of the PDF and the embedded URL suggest it's designed to redirect users to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/strik?utm_term=new+trends+in+social+media+marketing+2020 PDF link annotation
    • http://maslovauto.ru/32899879149nze42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_5fdc368d6caac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_602ab3ef595a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450507/normal_5febdc4f2a8bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_601b2e11875b2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410415/normal_5fcf5b055f55c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427103/normal_6007a1dacb4ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407788/normal_602d0b1845c3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405674/normal_5fe929d8c1c92.pdfIn PDF document text
    • http://detonic-de.website/dota_auto_chess_cheat_sheetxaqv1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457620/normal_5ff7c49224239.pdfIn PDF document text
    • http://aycotoro7.xyz/senoto5msuq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wezukep/musajonip.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/vejotalarexufulopodabafe.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/bench_press_form.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/75909562533.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F7 5448 bytes
SHA-256: 202256a1ec63a4ec304d440c5173180995c1ad677f6dbfdcb67d81b614d18ced
font_01_sfnt_off0000eb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB77 10328 bytes
SHA-256: f4ada48fff3cbf4e64daf844d3cf19e4659f6429d9c20b0a6a706a7c7da551d5
font_02_sfnt_off00010ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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