Malicious PDF — malware analysis report

Static analysis result for SHA-256 1465700f2470744e…

MALICIOUS

PDF

90.3 KB Created: 2021-09-20 04:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5c0f872a319694e6e0472069ce14cadd SHA-1: 95bdfd022d74e13ba9ee8663a0db8a41885f532e SHA-256: 1465700f2470744ef5fa08fc272034e9034ce38ac14ee6fe75796dc72c80c9f8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other domains, likely intended to lure users to 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 0.9942

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://queure.ru/uplcv?utm_term=aladdin+ep+366 PDF link annotation
    • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614611ce5fc4a---95777271105.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a156860030---funaxufuna.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137a33793033---sawudaburutad.pdfIn PDF document text
    • http://studiofagiani.eu/userfiles/files/47004081746.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/dejuvotomi.pdfIn PDF document text
    • https://vieclamlaocai.vn/webroot/img/files/39692829129.pdfIn PDF document text
    • https://mingyi-lock.com/data/file/userfiles/files/90779238010.pdfIn PDF document text
    • http://www.alliance-bio.com/user_data/editor/ckfinder/core/connector/php/upload/files/84720100597.pdfIn PDF document text
    • http://ohana1bbq.com/uploads/files/53793384521.pdfIn PDF document text
    • https://repetitorebi.ge/userfiles/files/misejevazizegeb.pdfIn PDF document text
    • https://iringmalaysia.com/ckfinder/userfiles/files/maset.pdfIn PDF document text
    • http://rimini-portal.de/bilderarchiv/file/luxokafugotovikewow.pdfIn PDF document text
    • https://o2opr.co/userfiles/files/wemujixojiperavasegug.pdfIn PDF document text
    • http://www.bc-arman.kz/ckfinder/userfiles/files/22226620010.pdfIn PDF document text
    • https://www.parquesanalbertohurtado.cl/ckfinder/userfiles/files/88619184817.pdfIn PDF document text
    • http://reelproductionshd.com/userfiles/file/winujafodajesirorokomize.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/d270a8f8cd3e5a7b717fae8a5007296e/4142163107.pdfIn PDF document text
    • https://iieng.org/editor/ckfinder/userfiles/files/95107652342.pdfIn PDF document text
    • https://nppgursaraijhansi.in/ckfinder/userfiles/files/mipemogilelezujujew.pdfIn PDF document text
    • https://ags-car.com/upload/files/82148635005.pdfIn PDF document text
    • http://firsttimehomebuyerstudy.com/images/file/zobeguka.pdfIn PDF document text
    • http://biancoacolori.it/userfiles/files/98415988623.pdfIn PDF document text
    • https://lhorizon.ca/uploadHorizon/file/jaxirigijin.pdfIn PDF document text
    • http://www.anapharmata.hu/ckfinder/core/connector/php/files/vexunolikaduxujegavuv.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_off0000f7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AD 10220 bytes
SHA-256: c77b936076bf25238a002c3c24035bd2e425a97d54dedef5aed83d1618aa079f
font_01_sfnt_off00010e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E99 20236 bytes
SHA-256: 4bc9e07a3d17b55371d412d109ffe5c1d7ba700c9cbe070630c138e498ad6e44
font_02_sfnt_off00014451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14451 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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