Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96b4f8248ed6daa…

MALICIOUS

PDF

77.3 KB Created: 2021-07-03 04:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 6e0b92dd1d90cc2ba6b888c9cadde9de SHA-1: 7927e7a8e964ac4c5c591bbaf666c612259d679a SHA-256: d96b4f8248ed6daabaf0e32682596d3a92f489d94f56450aa91adf44e9751042
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to websites hosted on compromised CMS platforms and disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure as a link farm, combined with the compromised hosting, points towards an effort to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://huntic.ru/uplcv?utm_term=one+none+or+infinite+solutions PDF link annotation
    • http://altaprecision.com/userfiles/file/gorotizekus.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/rbhhm085s7m9ahsdjiehmmuuke/jeganaxe.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a787afabeb1---81025281587.pdfIn PDF document text
    • https://stiff.pl/ckfinder/userfiles/files/gazapepubawegir.pdfIn PDF document text
    • https://mygamedaysports.com/wp-content/plugins/super-forms/uploads/php/files/31ac55af5f6cc32228c221a490f1663c/41046975251.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/b8edd92195a7695c20aa862130439114/pewudavoginetipafa.pdfIn PDF document text
    • http://domeinbeverdonk.be/assets/files/file/91920680779.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1be476f14f---47087887686.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160714048ecac5---zadolokage.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210530_2C662DC5F24E1EBE.pdfIn PDF document text
    • http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16240603097869.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/zenogesemaxawupugux.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a8189c0a1f3---jofasojebolirijilitive.pdfIn PDF document text
    • http://ahdongjiu.com/upload_fck/file/2021-4-30/20210430153756719663.pdfIn PDF document text
    • http://pronobile.de/catalog/file/44177243845.pdfIn PDF document text
    • http://plncse.hu/php_data/file/vaxozurivogobowuva.pdfIn PDF document text
    • http://beergolfers.com./blog/images/file/52558410835.pdfIn PDF document text
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/gojulawozodipipojidipafok.pdfIn PDF document text
    • https://bank-kredit.at/ckfinder/userfiles/files/kadigunefesaronif.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/d5369d7a30883ad6f561813babc577b6/dalid.pdfIn PDF document text
    • https://xn--interpeas-r6a.es/upload/files/32293005167.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/p72evp3gcokoa8ael1biob4m94/29503036424.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/91651987c68243c959fdb5df457da9d6/29267328063.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cad3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EA 10168 bytes
SHA-256: d127ead49aaf224c7571658bf6cdc9edf66f4b7be65cc8e2cea601374672b3e2
font_02_sfnt_off0000f9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D1 17476 bytes
SHA-256: e09524720f0f1adb8120db7cbf1614e30fd91cf698ab1fa4608463200f206a41

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