Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e32bfcf3398ea5f…

MALICIOUS

PDF

74.3 KB Created: 2021-03-04 13:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: f372e25465960892fd38357830f3a5f4 SHA-1: ef101973a83022c4d0070c0c75ce92fec5d1ed6d SHA-256: 3e32bfcf3398ea5fe470cecdd026e96fdf5e37736853e15b30654bbf47146215
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, with several pointing to suspicious domains and one explicitly noted as an invisible link lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external links suggests an attempt to redirect the user to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://bologen.ru/award?keyword=how+to+replace+shark+rotator+vacuum+hose PDF link annotation
    • https://bazotopefinuz.weebly.com/uploads/1/3/4/4/134435952/sigoketugupugetep.pdfIn PDF document text
    • http://nukuxarigikuxez.iblogger.org/rapaxe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401558/normal_6005235009d00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481509/normal_5fe3e3ce6a0f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388813/normal_5fe47f0d80445.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414487/normal_5fd16f0c2f9c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418570/normal_5ff551a026b2c.pdfIn PDF document text
    • https://puxodemidumez.weebly.com/uploads/1/3/5/3/135345879/gewufivali.pdfIn PDF document text
    • http://smotrikino.fun/2334720224a7c1j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492257/normal_5fe79350aed92.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/Dt7iiR6/papikumegagupaze.pdfIn PDF document text
    • https://gepubife.weebly.com/uploads/1/3/4/3/134315704/6009152.pdfIn PDF document text
    • http://kewugujijafe.iblogger.org/battle_house_full_hd_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/rogokivika/jchcidF/vimusuviku.pdfIn PDF document text
    • http://jotijitod.66ghz.com/80160216467.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/fijexexewo.pdfIn PDF document text
    • http://ig-supportcenter.xyz/28711306461kw2mp.pdfIn PDF document text
    • http://copyright-infringement.business/7516556462783kbj.pdfIn PDF document text
    • https://cdn.sqhk.co/jimatoju/gjeg68Z/66438440559.pdfIn PDF document text
    • http://pufaxokijajijev.22web.org/balanceamento_de_reaes_exercicios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e5a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A8 5348 bytes
SHA-256: 126e99f6589379447b9123261b152af61d48c63a6b5f6b89afd30c390b7c9cb3
font_01_sfnt_off0000f7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BE 10708 bytes
SHA-256: dc96f722180fe9483f63764b8ddc15198ce643cb9ea04bb0856e6fc2f6cf27d1

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