Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d7d46dbc35b11b…

MALICIOUS

PDF

87.4 KB Created: 2021-09-05 07:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5b7a8ad0add3b891f16d535991478546 SHA-1: 0c7fb56502061a615dacffeb3bf3e3eb77a5bc1f SHA-256: 32d7d46dbc35b11b43c1beac23841a317dd18cab196cfc8150c9dde4211d7682
156 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, with heuristics indicating it functions as a link farm pointing to compromised WordPress uploads and disposable hosting. The embedded URLs suggest an attempt to redirect users to potentially malicious sites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://pixomot.ru/uplcv?utm_term=nyscef+pdf+checker PDF link annotation
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb7e9ed8b2---zabizumavasosogijusadut.pdfIn PDF document text
    • http://goldenpeak.it/userfiles/files/7166284121.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b9cb38f0a8e---40489098277.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/pe7kogjpv3epne7c44elemghu6/fagozudaworowozidojaxobas.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/4756772308.pdfIn PDF document text
    • http://gongotour.com/FileData/ckfinder/files/20210623_CF5F5F476E690EE2.pdfIn PDF document text
    • http://knuhpharm.kr/userfiles/file/20210830091103.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160bee85cdfbde---jemose.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7aa748916---sukiregikarafajilarimi.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/ratoj.pdfIn PDF document text
    • https://www.luxboss.com/ckfinder/userfiles/files/21545330970.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210902_9BFB691173CDDF71.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16083f036486b1---kujaxobiweluziduve.pdfIn PDF document text
    • http://veraschwemmle.de/fckdata/file/68423542425.pdfIn PDF document text
    • http://stilistspb.online/public/files/uploads/files/17860712099.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/8f582b48f87df4c3ee193dc1dccd7564/vupegevifebokomonilijiji.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/hgl3aa0690e24jvbd2m1e23h7r/mijaxomodudul.pdfIn PDF document text
    • http://theheavent.com/userfiles/files/limobe.pdfIn PDF document text
    • http://www.klpreschool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ad5eb76e5---gafonezakafodoneribasidep.pdfIn PDF document text
    • https://qualitymattressfactory.com/admin/userfiles/file/48212516879.pdfIn PDF document text
    • http://enovosti.info/ckfinder/userfiles/files/93020346483.pdfIn PDF document text
    • http://naturallymine-chicago.com/clients/867610/File/87249676064.pdfIn PDF document text
    • http://quranday.org/userfiles/file/dexofevajabukika.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c0f679b95---40854391753.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_off0000f127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF127 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001093e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1093E 10276 bytes
SHA-256: 023c92baa792fedcb0aa2b669bd636b148c862939bb8b4afdddafeee604b5d15
font_02_sfnt_off0001207b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1207B 18068 bytes
SHA-256: 5aebaefa57e6394a3e7e2923accb30adc13b9af15fa8a37edb3b5aac3fb7d16d

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