Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2997ceafc23897…

MALICIOUS

PDF

75.4 KB Created: 2021-04-27 00:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 023e5a3ac59043cb60c0ff43f4c4f2ff SHA-1: dcfa6846dbbeef8e0b94d55ebc453600b76b56e4 SHA-256: 4e2997ceafc23897bcfc10598bda7efe4543123719931f3902261fe9da80c88c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, with one prominent URL being resalured.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically a phishing or trojan distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of many external links suggest it's designed to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://resalured.ru/strik?utm_term=how+to+learn+jiu+jitsu
    • https://static.s123-cdn-static.com/uploads/4367916/normal_5fc70f39c2a66.pdf
    • https://cdn-cms.f-static.net/uploads/4464709/normal_606c9571f136d.pdf
    • https://cdn.sqhk.co/futidiwe/enfhaCg/wizisutugezonutobafixama.pdf
    • http://vetovikaxu.mypressonline.com/23386782473.pdf
    • https://cdn.sqhk.co/novupezezis/eaqyQid/veburaxikelapofoj.pdf
    • http://widaluvawigomum.scienceontheweb.net/vewibemokutijikojovo.pdf
    • https://cdn.sqhk.co/xekemini/hhchdjb/28124338299.pdf
    • https://cdn.sqhk.co/visesefider/gfghGje/lidotigepobizofar.pdf
    • https://guzokilib.weebly.com/uploads/1/3/2/7/132741743/8082939.pdf
    • https://cdn-cms.f-static.net/uploads/4495707/normal_60640e6ec6b68.pdf
    • https://cdn-cms.f-static.net/uploads/4410953/normal_605246f315d29.pdf
    • https://cdn-cms.f-static.net/uploads/4485703/normal_60316fae2bcf5.pdf
    • https://mipapipav.weebly.com/uploads/1/3/4/0/134012398/gujowix.pdf
    • https://cdn.sqhk.co/tuwetebep/hcdgfjh/ates_ve_su_5_oyna_oyun_kolu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2fde5a5e-b9a5-4030-8e49-afd5a50aed5e/duguxalulagiradux.pdf
    • https://uploads.strikinglycdn.com/files/00fac284-120e-4ba2-981c-1d1e7393922c/does_safety_first_car_seat_fit_graco_stroller.pdf
    • https://uploads.strikinglycdn.com/files/0aaa287c-febc-48ed-9fbb-c1cebda38f33/55601923084.pdf
    • https://uploads.strikinglycdn.com/files/f6588e0c-cd71-4a13-b559-7f4149b70480/rukujurapobepizelaza.pdf
    • http://metiguwuwezaza.atwebpages.com/7414528235.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed8b.bin
b7e9fcfa1bb59faf478cf85a328a424a2a89b7fa92119101db00a40d1991034a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED8B 4808 bytes
font_01_sfnt_off0000fe01.bin
53d9f89195ac119661ebfb73def464af07dbc884646feded6c245a7446ac5c1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE01 10276 bytes

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