Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6203c8e167be03…

MALICIOUS

PDF

85.7 KB Created: 2021-06-26 10:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c712303cbf292ae422b4274f433f11eb SHA-1: d6ae652ed826bf854cab5725dbd6be8ffddaff0b SHA-256: ff6203c8e167be0338d7c7b2cf909a09809a3655a67cb3f9266b470afa06429d
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, with numerous embedded URLs pointing to other PDFs hosted on compromised websites. The primary purpose appears to be directing users to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac33f0f0735---17585287122.pdf In PDF document text
    • https://ivanda-commerce.hr/userfiles/file/tugajuwuwemo.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/doviknjpng1uf1tl7k9gn1mg74/75674288836.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/d54d34b67e1b1244e333af28c84ddb0e/butapagemalazupujen.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/a5b7a979135d99f6331ccf6c57f2a589/bolifo.pdfIn PDF document text
    • http://tivatijapan.com/uploads/userfiles/file/77394687020.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/siwikodepu.pdfIn PDF document text
    • http://lyzebrno.cz/userfiles/file/rodaxurut.pdfIn PDF document text
    • https://webtechnocrats.com/upload/file/sefilasezum.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/204c2df781b77b13d06f3842ffab8a32/29865592027.pdfIn PDF document text
    • https://andana.us/files/files/mujinubiligoxuvibo.pdfIn PDF document text
    • https://aravlicraft.com/cmsCart//upload/file/97144533234.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c63261545ad---26715523814.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/8e27c952007f8e70083758cf087c3cd2/jezetibivukuwek.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3b8370188---83360738025.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b2d9222aa---gemogujajevedatupukire.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1edc3956b---82100462606.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/86376243391.pdfIn PDF document text
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/0e3411993457871eaa6db0a5cf327294/dubafipirivepudukolumo.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/wovirewawitug.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d82062c906---julinejobatibudevo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a109b234365---netisadusokobevidomitemi.pdfIn PDF document text
    • http://mynigaoe.com/upload/file/20210626134330.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=redwood+beauty+collegePDF 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_off0000e8a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000100bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BB 10564 bytes
SHA-256: 56df4e1b16b43f6ef4a318ffa730a9c011abed4030c87bf948d01e0b65949c15
font_02_sfnt_off000118da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118DA 18956 bytes
SHA-256: 8fc6173f39d5e71c0e8cd15d89bb21de404c8e37cfbf0d71e118f392dca329e7

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