Malicious PDF — malware analysis report

Static analysis result for SHA-256 e92c085faafec8a5…

MALICIOUS

PDF

77.2 KB Created: 2021-05-13 09:04:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c9d3fd6bb60a8920b1ecc8010a6d19ee SHA-1: 5302da1829c4190512da960e96c542e1440ad213 SHA-256: e92c085faafec8a52bd468c70777a95986e2fbd64e044aae9040b05754105c73
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, with one prominent URL pointing to a potential phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to drawing, which is likely a pretext to direct 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/strik?utm_term=how+to+draw+a+holding+hand PDF link annotation
    • http://bu-markett.com/3291758663cyvtj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382793/normal_601e7e0e42943.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/vasantham_toggle_tv_guide.pdfIn PDF document text
    • http://baltika-trans.ru/powesuzepuloxedaxobewu43mgk.pdfIn PDF document text
    • https://vakozumemarob.weebly.com/uploads/1/3/1/0/131070483/434438.pdfIn PDF document text
    • https://soregekewo.weebly.com/uploads/1/3/4/2/134266411/7314050.pdfIn PDF document text
    • http://varesazu.22web.org/carte_touristique_aveyron.pdfIn PDF document text
    • https://bivesazi.weebly.com/uploads/1/3/4/6/134652180/6837637.pdfIn PDF document text
    • https://wutawodasigupo.weebly.com/uploads/1/3/4/5/134512212/5506622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450430/normal_601f7dfb7ae0f.pdfIn PDF document text
    • https://vutofuwejazow.weebly.com/uploads/1/3/4/3/134321520/teminuv-wuniker-wegip-pepejoritisamos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456984/normal_603832588ddf3.pdfIn PDF document text
    • http://13millions-warzone.store/quantum_mechanics_books_for_msckwwic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382974/normal_603f0fec34d53.pdfIn PDF document text
    • http://swast-group.website/ivan_turgenev_first_lovecnvnq.pdfIn PDF document text
    • http://shtampshop.ru/idle_shopping_mall_levels9fp2s.pdfIn PDF document text
    • https://xuduburuk.weebly.com/uploads/1/3/4/3/134323667/153a1f0581.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/37bf2905-ccc9-4031-b482-511bdcadadf7/79173495442.pdfIn PDF document text
    • http://gapifemesi.rf.gd/kulidepazizekovuxamewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/278cd949-247f-487a-80fe-31371a1d30f3/35304753882.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_off0000f164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF164 4960 bytes
SHA-256: ee320d4ede7671e039a0179c79d5715aa4e2511473c8bb150721ae2cf094a989
font_01_sfnt_off0001024d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024D 10756 bytes
SHA-256: aa3d77c7e2b2ab9b22fef2955a9a3321eefc0aea16af3abc896e1ccf886a2fac

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