Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2485dbeb692568a…

MALICIOUS

PDF

84.9 KB Created: 2021-09-08 02:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c1faeb42751d6439f8333676776e2168 SHA-1: 9bd33843a9fca0c443ba0be829a2d88aaa4ac9ef SHA-256: e2485dbeb692568a03869282a41f1ba1a28eb73bf85454245e36d4833dbb5926
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, flagging it as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites. These links are likely intended to lure users into clicking them, potentially leading to further malicious content or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16099b9e07ddea---lebiwepubedup.pdf In PDF document text
    • https://euro-m.si/web/dokumenti/file/66328415734.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/kusigiwa.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/ef6240f3b3ef07469a89a9499be526a6/walepivaruv.pdfIn PDF document text
    • http://michianaorchidsociety.org/clients/2/28/2832e32407c795c8d28ffe68102aa18e/File/35236562463.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607886b4ad470---70845795853.pdfIn PDF document text
    • https://sieuviet.net/webroot/img/files/64110711137.pdfIn PDF document text
    • http://oprfhs70.com/clients/879438/File/pesex.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f701b32664---kewaserexime.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9442db0d1---80906008986.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16120012657188---wepobopazesetusuruwa.pdfIn PDF document text
    • http://www.jucadent.es/ckfinder/userfiles/files/lemaju.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/d545df53a45970dbf5376a0b590c5012/safopos.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/17145304299.pdfIn PDF document text
    • https://imagebuzz.net/ckfinder/userfiles/files/dusidofoxegimoxiwogobiza.pdfIn PDF document text
    • http://keralajesuits.org/userfiles/file/61300184806.pdfIn PDF document text
    • http://alliance-vietnam.com/upload/files/nigakadavifaxekimirikal.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ceae5038a4---lexodeveforozadukududadow.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/46585698210.pdfIn PDF document text
    • http://caopump.com/admin/userfiles/file/81487585242.pdfIn PDF document text
    • https://www.nickelmarket.co.za/includes/ckfinder/userfiles/files/nuriwunowelagugiwotufi.pdfIn PDF document text
    • http://globalbando.com/DATA/upload/files/202109060452177212.pdfIn PDF document text
    • https://sweetburden.com/upload/users/files/fefos.pdfIn PDF document text
    • http://frangarcia.eu/upload/file/79359392948.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=plano+renfe+cercanias+madrid+pdfPDF 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_off0000e282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE282 19960 bytes
SHA-256: 371b6777f9db8f44489a4d80eee4aac9248ca6089848db5c1a74a9aea7f0ca56
font_01_sfnt_off0001153c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1153C 10684 bytes
SHA-256: 68e328552a3e6a31e264e2853a91c29415ea6e8ecf0d9a749bbf112f37445833
font_02_sfnt_off00012dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DAC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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