Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee625047e643eaf…

MALICIOUS

PDF

85.5 KB Created: 2021-09-20 05:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 9826664ddde61a0778d3576a6946ac4b SHA-1: a82203a3af0a94b585527f15b666663758c756ce SHA-256: 7ee625047e643eaf6c313a0701fc33acc491d33fca2e7dc29186cd3b524b4d5f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate this is a link farm designed to redirect users, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://allytemp.ru/uplcv?utm_term=new+os+for+android+phone PDF link annotation
    • https://toptenstudy.com/upload/files/BodyFile__613A167460604.pdfIn PDF document text
    • http://mawratanews.com/armedia/uploads/files/23950677884.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/8f01e4f87394ef997433abadb85d8018/nutewupibikixovenaxax.pdfIn PDF document text
    • http://casaatlantida.com/userfiles/file///39475063203.pdfIn PDF document text
    • https://hilanguage-com-tw.triangle-design.com/files/miropuk.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/rajalutomagew.pdfIn PDF document text
    • https://kabelkyaobuv.sk/editor_uploads/files/gesubunidotomojuze.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147ced5b3a34---95920414807.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161426aeedb46a---28960454857.pdfIn PDF document text
    • http://mlsy.cz/images/file/files/3909084228.pdfIn PDF document text
    • https://mobilieroccasion.fr/uploads/file/zagumanesewuwizexajomob.pdfIn PDF document text
    • http://alrabbanoilandgas.com/file/files/34532345970.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/daramame.pdfIn PDF document text
    • http://vpecargo.com/userfiles/file/diriludemojexiwi.pdfIn PDF document text
    • https://cherrychile.cl/cherry/uploads/contenido/files/xotofulaxebakiwuvumiguba.pdfIn PDF document text
    • https://www.jdconstinc.com/ckfinder/userfiles/files/bekiguzuw.pdfIn PDF document text
    • https://ku4ysk-9lgp4y.com/contents/files/67047078306.pdfIn PDF document text
    • https://floresdeserrezuela.com/aym_image/files/vazakefivikexeku.pdfIn PDF document text
    • http://bubb.cn/up_file/file/mabajaleredebepezotalakog.pdfIn PDF document text
    • https://liur-krd.ru/userfiles/file/53530966069.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140a39e621a2---30336660951.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/25307078639.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/78747188308.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/u6l6s8eqoq2rolgl87tjf5iacu/17033553539.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA11 17620 bytes
SHA-256: 999b1f1441305b3d3c55665c9f0258078fd39c4a352582c2a695e1f275c48801
font_01_sfnt_off00011829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11829 10512 bytes
SHA-256: 32f9f602bf66b7b4d61cff9d8b644673da436e9ca10e8610b3165e226d8557c9
font_02_sfnt_off00013015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13015 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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