Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2041145c2525b6f…

MALICIOUS

PDF

77.7 KB Created: 2021-04-27 13:05:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 63076df77b87540f8e291e440a0352d6 SHA-1: ec577dc8ca5cb376cde836f698dd55a6147730cf SHA-256: b2041145c2525b6f62c85cbe63ee6b8d676b9c3dee0da8762d74a651f5d03fbe
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary URL leading to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/strik?utm_term=how+to+refill+ink+cartridge+epson+l355 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368223/normal_600c51774e1cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419451/normal_602e22a369c5d.pdfIn PDF document text
    • https://rilavowa.weebly.com/uploads/1/3/2/7/132740415/lopalafek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420761/normal_5fee692f37108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408863/normal_60172646c754b.pdfIn PDF document text
    • https://relabibede.weebly.com/uploads/1/3/2/8/132816075/domadekutofaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412588/normal_60209c9645922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489045/normal_601436f925d19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413714/normal_602ad7daec310.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/fotepopunaj/pulmonary_fibrosis_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/the_beautiful_and_damned_ending_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/zipaxifupogewivofapur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3f3e78c-dece-479d-b92a-0841128b7ce5/82221767805.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/88787398116.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/hayden_white_metahistory_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/399bb12b-9596-48af-b8f4-0463a23485a2/54658437018.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_off0000e218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE218 5516 bytes
SHA-256: 7203a9b74ded10c6742c0b75aa47ea2c05291ccb2e671a2d9a9fb5101e5ba024
font_01_sfnt_off0000f500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF500 10864 bytes
SHA-256: c99f40c8070a91e3db619203e758e4bf7f3ab749033f4858ab5d7e5c84988b08
font_02_sfnt_off000119ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119FF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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