Malicious PDF — malware analysis report

Static analysis result for SHA-256 062343045e47d4f3…

MALICIOUS

PDF

89.3 KB Created: 2021-06-29 20:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 521afbdb94c81f50def6a13ca3c28a96 SHA-1: c0e1c171dfd7e1abf0d7c3368b97002bf49c2095 SHA-256: 062343045e47d4f39450653a1ced8efd5b9d70955b8418ea9002ceb937f08aa1
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier. It contains a 'clipboard command execution lure', instructing the user to copy and paste content into a shell, likely to execute a secondary payload. The document also hosts numerous links on compromised WordPress sites, suggesting a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/3a24a1b689dce89069852faba7e462fa/gojixafipubasopememotoz.pdf In PDF document text
    • https://cedarcreeksauce.com/wp-content/plugins/super-forms/uploads/php/files/d4e471077c8d261b0617a83f96365e4e/31348686367.pdfIn PDF document text
    • https://agatanorek.com/files/file/38684396367.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/1be4c390a69d16f60b57ce035cf4a2fe/21335816416.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/ee8452e7fc62c5c01a614b1dc2647f1b/5025360763.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5utt07h0530lkrl29qr8d16sk5/vajowodanakaberegob.pdfIn PDF document text
    • https://eravukappalpalli.com/userfiles/file/kedukoteson.pdfIn PDF document text
    • https://cosplay-expo.it/ckfinder/userfiles/files/61053740232.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4794e01513---sobulovinetukebipe.pdfIn PDF document text
    • http://abwrichmond.com/uploads/files/98780891975.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/31678450095.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/iuc4ds0kjmq2hgpaehimjckuns/foxisosim.pdfIn PDF document text
    • http://chieusangducphat.com/uploads/userfiles/file/vorafe.pdfIn PDF document text
    • https://vico-domrep.com/ckfinder/userfiles/files/289660696.pdfIn PDF document text
    • http://hondatayho.vn/images/ckeditor/files/40537730129.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877e99b6a9f---pidivomobejonew.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/f893a6f14f8b04546e8004996d594326/87751116285.pdfIn PDF document text
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/111b1d61d7bab819e16dc03b3f471416/97039440744.pdfIn PDF document text
    • https://plswa.com/wp-content/plugins/super-forms/uploads/php/files/31c179f2999f6162ae77c3612f1eb83c/dabejemakujatudegipozolo.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/d1151d15b8d2ba2318c2c2cada516460.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/3pheaooff6445a2gqav4s2irg6/rubitisuvobobepemuvone.pdfIn PDF document text
    • https://jyapa.com/jhuoyue/uploadfiles/nufuxadaforu.pdfIn PDF document text
    • http://app8itebarandgrill.com/admin/images/file/ximetexedipilasezus.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/ghim80lhjkm6i14kb69jetqije/jufinenivazixowezuli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=davinci+resolve+export+cropped+videoPDF 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_off0000fa8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8B 10676 bytes
SHA-256: 3da3e6eb2f16125d31669d4dd41c325bc0da5ae9b57fbf8e4da0b1f5d96ed1c6
font_01_sfnt_off0001132a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1132A 17112 bytes
SHA-256: 489e4fd6916d5d61a9585aad83530af8f4e53810bc9221044133c308fb16acda
font_02_sfnt_off00013fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FE5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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