Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da97ca0eef0a060…

MALICIOUS

PDF

85.2 KB Created: 2021-09-01 15:01:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 751c99b272a4c75f05d22293fdd64041 SHA-1: 59133914a952de5c8a30050e7e2d69be8af6ef55 SHA-256: 0da97ca0eef0a060a9198369aada0583f8fe49d3bd68e4e8f1dabf7981af1873
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://crewmak.ru/uplcv?utm_term=typescript+this+undefined PDF link annotation
    • https://jmcoverseaspvtltd.com/uploads/files/36084079691.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f11db78b0d3---71962304401.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/debuxitedifidebu.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/4d7d3a3ea6b339d59d271603b5a474b2/48161167406.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/2a15791e7fa10badfee09efc1aa06f53/89476166510.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/29b0f6b66c1fd57360b4660940ca56b8/gogokiduteneguvixaw.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160881fec57393---tamelibigugowizexamunuza.pdfIn PDF document text
    • http://mariancozma.com/_user/file/62193555312.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/13470933362.pdfIn PDF document text
    • http://stananddiane.com/clients/6/67/672a2699e369d648dd23e03de9deda78/File/beneki.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/q0jc9ttim70p50der0462pdf24/94688493121.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c2a2e7bab---zibidewug.pdfIn PDF document text
    • http://shopcloud.cloud//ckfinder/userfiles/files/27885316181.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/80152803516.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/pagisomutudorige.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/245f482f879ae8aa9a0ba58bb95fa80d/25026616459.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/26566518188.pdfIn PDF document text
    • http://centromp.it/userfiles/files/kubaxigusumiwefojas.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/7f14d58bda8af10e12332d4d4d8fa426/fipomuzar.pdfIn PDF document text
    • http://3suntech.com/UploadFile/file/20210630070349469.pdfIn PDF document text
    • https://mingyi-lock.com/data/file/userfiles/files/37488572435.pdfIn PDF document text
    • https://taxiparga.com/wp-content/plugins/super-forms/uploads/php/files/03d849bf64cb05518733f5b2645f62b0/wetafefowinulalanuk.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/11257835235.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_off0000e26b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26B 10568 bytes
SHA-256: 266cfbb1e12f6f3bbaacbf079c5387e6f9267c65e6d12abcf61ade7b892b78ee
font_01_sfnt_off0000fa7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7B 19576 bytes
SHA-256: 32756a59c020f6e64c9a7f52f34cb2b95e74811160d585f6f45cfead0b63c1be
font_02_sfnt_off00012cfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CFE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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