Malicious PDF — malware analysis report

Static analysis result for SHA-256 292bff14b7cded67…

MALICIOUS

PDF

72.1 KB Created: 2021-09-05 18:49:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: b472f729ccad9e64e9fc8fabf7a3da82 SHA-1: 9f0024328f63b3d0d26cc7eb95e27c3989439b15 SHA-256: 292bff14b7cded674baf1bb5f8a58339947f256363cf9855cc032f214b8d22eb
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It contains a link farm pointing to multiple compromised websites, likely intended to trick users into downloading further malicious content. The presence of external URIs and link farm heuristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/efoi1akqkiphes70bbu0jsqood/52136557878.pdf In PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160968f862eea1---kebap.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160790bb6ee5b2---vipinem.pdfIn PDF document text
    • http://ebrinteractive.com/userfiles/file/87604004703.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e50bf6c2f46---5891461657.pdfIn PDF document text
    • https://alaqart.atelierleuthold.ch/userfiles/files/xibedetasovugevexemumafez.pdfIn PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607489aa94e6d---xutavawuxisesi.pdfIn PDF document text
    • http://www.patriarca-batiment.com/ressource/site-image/files/32112543240.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/82610449594.pdfIn PDF document text
    • https://landatur.com/files/galeria/files/6787726471.pdfIn PDF document text
    • http://lyzjkgm.com/d/files/32943433655.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/e490df27c92beeb7de85ff13b06d107a/62491510469.pdfIn PDF document text
    • https://thaiwoodengames.com/files/upload/files/semaripepexorulapak.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160d704bf146ea---68316682011.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c907f5586f---62786774833.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/kuwupejomize.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/15195698875.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/161187da2898ce---mifojaxexaganuvogi.pdfIn PDF document text
    • http://sdtrafficticketlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/simenakeramumegasusew.pdfIn PDF document text
    • http://emeat.ru/var/files/maxilonosikifanef.pdfIn PDF document text
    • https://euroroma-bg.org/files/file/riforikorajomizuxebipu.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/96474122869.pdfIn PDF document text
    • http://irths.com/upload_files/files/39008809385.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/97035892404.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/dudusopibonomutuxuteponux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=ca+articleship+resume+free+download+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_off0000b8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d10e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10E 11104 bytes
SHA-256: 019d5f8abc856cc7b47442958c2e842b18f816ff6c1b66a7ff651f10cdc8196b
font_02_sfnt_off0000ead0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD0 15660 bytes
SHA-256: 89d42546fb92d926001a7c860643eabf6bce7fa6d2814784427d3e58a374ad08

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