Malicious PDF — malware analysis report

Static analysis result for SHA-256 750f6b07b8ede8cf…

MALICIOUS

PDF

101.1 KB Created: 2021-06-29 00:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e15e99dcaeffbcc815244ab2bb777d4d SHA-1: 680ff854ba00f40e911a56823910b0a724721cc3 SHA-256: 750f6b07b8ede8cf56889746981f4cdf459558c3ba2059bd89183f125cd71d3b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest an attempt to obscure the final destination and potentially track user engagement with the phishing lure.

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 http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec85657992---18536065002.pdf In PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/64f35ed3db13df15584989d1354e73c5/jamaluzu.pdfIn PDF document text
    • http://mediaworld.pro/ckfinder/userfiles/files/31086655642.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1607c51295b04e---zijexekerovuxozi.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/7c734d28747881375658e7db1c319b23/kaworabutas.pdfIn PDF document text
    • http://vzwsportenmuziek.com/content_docs/bozurofemowapiguruwiv.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/7500187394.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb4abd81e6---2723304438.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/0c4bb47a8a32ff8b2dbe03b0998578b4/dosirigajetodonakotupijig.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/65298017074.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/28c39cb19ac07eb37bbfd2c527729f11/duziv.pdfIn PDF document text
    • https://laatjehuisweerstralen.nl/upload/file/23403249943.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/34693025488.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a82d1973f---tefimixof.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/de37289942c0718f8faa6563e88add13/bedirakeg.pdfIn PDF document text
    • http://mini-garden.ru/userfiles/file/86615527920.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/7gj00bpf723riov5ejfstj8r96/85449104025.pdfIn PDF document text
    • http://abwva.com/uploads/files/rikitoguxutefikoxu.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607d34bc54015---tozazazaf.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/69439479892.pdfIn PDF document text
    • http://broadmoor79.com/clients/864886/File/kapaxezirikop.pdfIn PDF document text
    • http://tktravel.shop/FileData/ckfinder/files/20210622_1031AE4C06649BC0.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=peter+crouch+englandPDF link annotation
    • 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_off0001251c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1251C 19756 bytes
SHA-256: 8e87ee60a27f0136581b671ec5fc3d82d335e7375354969e8f162752aa502e02
font_01_sfnt_off00015630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15630 10488 bytes
SHA-256: 4956a6f4b08aaf7b124f40640261dcdc72dbd43004388149726f3d0bed01f6a9
font_02_sfnt_off00016dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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