Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a6ce63bac6a509…

MALICIOUS

PDF

77.5 KB Created: 2021-05-30 03:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 46beea50ea0246fe71886ada49c5fb1f SHA-1: e228b9baae442ab3aae3b270502676da4ded1912 SHA-256: d2a6ce63bac6a5097983f382e79494d9e1db0468021fca3df0c25d75425ef01f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malicious content. While no scripts were explicitly extracted, the presence of numerous external URLs points towards an attack pattern focused on redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/strik?utm_term=is+house+flipper+better+on+pc+or+ps4 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425910/normal_5ff90675e77f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393908/normal_606606b341c3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485809/normal_5fcb5ce1a0ba0.pdfIn PDF document text
    • https://tubuzitobez.weebly.com/uploads/1/3/4/1/134108618/xorunezoterutedulege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_60415bcea23bf.pdfIn PDF document text
    • https://rivupabageram.weebly.com/uploads/1/3/5/3/135323939/ropusetede.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500692/normal_5fd0976c6ce42.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4444630/normal_60aff191437ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417995/normal_6026247b3230a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459170/normal_5fd227b20de45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413573/normal_604026846942d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388814/normal_5fd293f3a902a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_601ecfcd41c10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448720/normal_601bf9146eb27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_60554fe0351e2.pdfIn PDF document text
    • https://nitesefoxon.weebly.com/uploads/1/3/1/4/131453907/pewipofekojomo_wezodi_golute_giduwemujenor.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4413838/normal_60b2d41acb70f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389820/normal_6015949acb6dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446272/normal_603e89fd67670.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/959ade70-f220-4195-b9f1-cd493b51e1d7/philips_norelco_bodygroom_series_7000_showerproof_body_trimmer__shaver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3194cbc2-4488-49ff-acaa-bad71bc07fd2/839896804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/430ced04-522f-404e-8dcf-b2cb790774d7/seabrook_island_lake_house.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_off0000f080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF080 5056 bytes
SHA-256: 3a999269b141a4e798fce43ba99550915aa3ff1c53b8cb017f00e407ecfef7d6
font_01_sfnt_off000101b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B3 11904 bytes
SHA-256: 93db74775966544fd4790643a9d0bcd5f5eba3539c7563f9cf301b438363b1b0

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