Malicious PDF — malware analysis report

Static analysis result for SHA-256 089e49cace0e19ce…

MALICIOUS

PDF

91.6 KB Created: 2021-08-05 20:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 4c20a8926c9f9206440cb97a0824bef1 SHA-1: ba9ae0ffe5f9c12e74c8ec0658dd77e826c3d637 SHA-256: 089e49cace0e19ce74724e3de049b83bfef10dee04789bc6c733362ea21ee72e
156 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a phishing or credential harvesting attempt. The PDF structure itself is a link farm, designed to redirect users to these potentially malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ddb85e9c3---lonavuje.pdf In PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5d36e85fca---35458850375.pdfIn PDF document text
    • https://serka.com/serka/upload/files/jawajuwofebakofuk.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/bacd09731d58bce5a60e4bf34080cd22/tarewikepewanewob.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/e6d08c044f965b949412ea5aab5478db/96894606213.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/nm528fh4e9d85s4sgs34n5e6t3/16557577966.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/tgk10osgf6hf5jqipsupcbpivu/69689424803.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/hrk0fp16lpbedsvd2b9es58dl5/39052714964.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608340276916d---femubedanefizozugotavopo.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160cad7f0ba4fe---93652574546.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/eqotsgd5orvvo4num2rlfqrnfh/4997284565.pdfIn PDF document text
    • https://scavilecis.it/userfiles/file/23850259156.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/93597255604.pdfIn PDF document text
    • http://congtrinhnhaviet.vn/upload/files/21074803631.pdfIn PDF document text
    • http://firewheels.pe/userfiles/file/debopozowibitorevow.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160990828e20f8---14288647147.pdfIn PDF document text
    • https://iasvn.org/Images_upload/files/weridajuruwomisadete.pdfIn PDF document text
    • http://longvu.vn/Images_upload/files/ximalofuwomamovatozi.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a83f1a14e---riwevobidubid.pdfIn PDF document text
    • https://rent-1.es/ckfinder/userfiles/files/35287805671.pdfIn PDF document text
    • http://agriturismoilnoceto.com/userfiles/files/kepajivinabifot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=kpss+%C3%B6%C4%9Frenme+psikolojisi+%C3%A7%C4%B1km%C4%B1%C5%9F+sorular+ve+cevaplar%C4%B1+pdfPDF 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_off0000fd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD06 18956 bytes
SHA-256: f3a338482bf07e67e086d0689f55ca448d0c89788446f569743bcd49d7123873
font_01_sfnt_off00012aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AEF 11996 bytes
SHA-256: 7719fd6427f62d2cc681cd73eb4c2ea84d625876e5b2f11a579748687e132ff1
font_02_sfnt_off00014634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14634 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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