Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe80873283b4ff23…

MALICIOUS

PDF

104.5 KB Created: 2021-09-07 01:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: fedb7a3eb7c37ba6d7b56af39aba334f SHA-1: bbfb59ec6b97f24cde308a742a9bbe556faf4024 SHA-256: fe80873283b4ff23601d518abef28b0c179a18692245c7d522f9f2622ea8d4d2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The 'SE_CALLBACK_LURE' heuristic indicates it's designed to trick users into calling a phone number for fake support or billing issues. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it is part of a phishing campaign, likely using embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lionkingbali.com/uploads/file/70510808982.pdf In PDF document text
    • https://jamurgoreng.net/contents/files/pafipupagixomon.pdfIn PDF document text
    • http://ipublicity.cz/data/file/levom.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/q8fihp8iuhrukon1jbft2ugjn6/buzasosigemedufad.pdfIn PDF document text
    • https://dolmalatrek.com/userfiles/file/xopebonowiwazasubov.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b287d3b4c3d---fepovekorukezijavubofono.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/6a9aa50cbeffe8ef0bf2657ebbdefef9/gukevovewi.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/c9hinkn7oct7n26m73ijo7vhil/benopuxigoxutetorebogexu.pdfIn PDF document text
    • http://ambvetsanprospero.eu/userfiles/files/44578697004.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1610cb1e1798a2---wasedamurisu.pdfIn PDF document text
    • http://hmconcretemixingplant.ru/d/files/tevarizij.pdfIn PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/5522339.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/57766909192.pdfIn PDF document text
    • http://jhdljz.com/userfiles/file/1626421911.pdfIn PDF document text
    • https://digireg.cz/upload/nupoxajunilab.pdfIn PDF document text
    • http://agisma.ru/files/pages/files/subavumuzanimiw.pdfIn PDF document text
    • http://gocreate.termall.pl/upload/fck/file/lasesivalepik.pdfIn PDF document text
    • https://elmaga.lt/components/com_mijoshop/opencart/image/data/files/xewenezofaw.pdfIn PDF document text
    • http://moon-villa123.com/CKEdit/upload/files/luberidukar.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/wurowolef.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16076a0dc4d37f---kaninebe.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160e6b1710b490---44835529595.pdfIn PDF document text
    • http://patroha.hu/file/75698045800.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=hp+zbook+15+g2+quickspecs+pdfPDF link annotation
    • https://lapdonline.org/file/47676532056.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_off0001339e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1339E 18140 bytes
SHA-256: d4c4cd6e999bcd02a9a8c64dc672a252402afa7aafffa283c77293f077ac6e49
font_01_sfnt_off0001625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1625C 11120 bytes
SHA-256: 4ee096726bc3ab44c19a5b083fcdff5a42f5a0314eb36baa996ff75eaadc85a1
font_02_sfnt_off00017bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17BD3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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