Malicious PDF — malware analysis report

Static analysis result for SHA-256 85216950ec05575a…

MALICIOUS

PDF

123.7 KB Created: 2021-06-27 00:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 11de4fd537fbbce210cb56084995dfe1 SHA-1: 0db13f64b95af30002c7ccbed5f6d2cc68232301 SHA-256: 85216950ec05575a50d362b33ffbaeeb14a5a9cf75bb57148770d7fecd98252c
176 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of malware. The file contains a link farm pointing to various domains, some of which appear to be compromised WordPress sites, and one directly to an IP address. These links likely serve as redirects to phishing pages or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://daaeportrett.no/upload/file/74425924054.pdf In PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16075743188d92---pizitijedebefegubiminixo.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/nelevivok.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/ab8686498c17bb842e856617a5b0aaca/vutigofutipenujaxogilepi.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abcc2a97695---zovaravixedigiwaxeduwi.pdfIn PDF document text
    • http://jucal.es/images/file/ridudekidajusoxupazate.pdfIn PDF document text
    • https://advik.net/userfiles/file/rifoj.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4e335e66e---12827255976.pdfIn PDF document text
    • http://proxima-design.cz/files/file/xokezin.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/60910488957417365f960afe734965eb/dapime.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/j1mveb4s6j45i1e7d43un67ee2/zusumujokuladib.pdfIn PDF document text
    • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb56fd5181---65362078806.pdfIn PDF document text
    • http://banphimchuot.com/userfiles/file/tijupiwis.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bf09ca9ba18---kixepokajedexedutexesigog.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609606a230f31---37086568884.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160722f8c1e860---zerulefetesuxikev.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087533818a99---xasoz.pdfIn PDF document text
    • http://ok-poland.com/userfiles/file/46995435024.pdfIn PDF document text
    • http://bookblog.kr/data/file//files/32783071852.pdfIn PDF document text
    • http://stalmont.eu/userfiles/file/wodaradabo.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/fowitukibine.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/birexoravijopigusonere.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/ev5qi5fek1fhbsosg499pavsq4/bemobidojotixejo.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/90b1dbde1e336f86c3b111a3c033c080/lelipawonibuwuzofi.pdfIn PDF document text
    • http://cartopack.com/Images/file/3665853038.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/zuxemiv.pdfPDF link annotation
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=knight+of+the+garterPDF 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_off000183ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x183EC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00019bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19BFE 17268 bytes
SHA-256: 672f277b508f9207ee15c7da4025b065f276a2baa6751148ae5f9e529505dae0
font_02_sfnt_off0001c859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C859 10268 bytes
SHA-256: 07d18b8b9c8619c19db1e3a666c44878330ab532db4d9cebedab294b74d50ebd

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