Malicious PDF — malware analysis report

Static analysis result for SHA-256 89da53c3aceac071…

MALICIOUS

PDF

121.1 KB Created: 2021-06-11 12:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: fe1976234a7e602e613a6d4561adb8e5 SHA-1: de2321520f912d2fff186f6b2e746e256d736020 SHA-256: 89da53c3aceac071911dd9f64cd31344781087cb7cd3c5728a300eadbcdc8c00
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to compromised WordPress sites, suggesting it's designed to redirect users to malicious content or phishing pages. The presence of external URIs and link farms points towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://inwebjor.ru/uplcv?utm_term=coffin+dance+piano+sheet+pdf PDF link annotation
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/7882b93e796b6a669c57d0f69dec2b17/94931358105.pdfIn PDF document text
    • http://vervesimuhub.com/userfiles/file/wijowuwekejawota.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a498330a109---21245799142.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16071f1dfa5e14---wumasuleral.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/n23d46hmb4jmgamimkqg0a2r9p/gadutiluwitudutevifokinab.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c32536b4ede---15831234699.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/kgdkkj7j5pp333n64gjgl2cg02/kojerusakag.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d3b163bf49---24818924989.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c325a6c6e6---48639643366.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d841e2e0b---61256927642.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092272610574---1990464584.pdfPDF link annotation
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a9a2943732c---vupojov.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/2dh0v86vsrn3nht2333ase4v1s/mitozawetifupigalugu.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/b0utiu3tkn794k92lejhatue7u/jevikurujidovemimes.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160824806f2df4---sizevibuwir.pdfIn PDF document text
    • https://o-dance.com/upload/files/62316080944.pdfIn PDF document text
    • https://esportenerd.com/app/webroot/ckfinder/userfiles/files/tomuz.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b00db1da21c---butadisoxudojame.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a6fcfb36692---dopitukezidutefi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://schema.org/InStockIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE737 31632 bytes
SHA-256: a41ccb6bdc1cb7a2581ed8ffc52fdf4a3809ec471d702bc6c7e1a730a24b1771
font_01_sfnt_off0001468d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1468D 5020 bytes
SHA-256: afe363168d6d0021cf327eb957142656bc461b0fb769191cd424e960a6d81213
font_02_sfnt_off0001579c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1579C 15372 bytes
SHA-256: c8e4256c5b2566de58d06cd57e2bc7194273e5c10cca75948ac90e6672fe43ad
font_03_sfnt_off0001874e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1874E 12068 bytes
SHA-256: 33264e1963a56178abe55a7ec9d82d012b5fd76565ca9907491440a6c31135b6
font_04_sfnt_off0001b0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B0D0 19664 bytes
SHA-256: cdd992f84c34bb189c76b6135e874adc2a1530224673d086876a2b1d01b30bd1
font_05_sfnt_off0001cc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC24 1736 bytes
SHA-256: 5095ccdfdd328c3f25b1766e9c65bca58fa839170fcb9f3db3c20e130d955aff

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