Malicious PDF — malware analysis report

Static analysis result for SHA-256 6263b01f2af32943…

MALICIOUS

PDF

85.4 KB Created: 2021-07-17 13:03:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: a4097c680b8fdd7ab1ebb0206d6b4ff9 SHA-1: 472ec62ec0fc9c35a7988a642642bb0cceb898a9 SHA-256: 6263b01f2af32943168aa5e1e93a61c95efbbae7dc96f9fdf99450272b564066
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous links to potentially compromised websites and a heuristic indicates it's a link farm. Crucially, a 'Clipboard command execution lure' heuristic fired, suggesting the document instructs the user to copy and paste commands into a shell, a common technique for downloading and executing secondary payloads. The presence of multiple URLs and the nature of the lure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://aldara-latinoamerica.com/userfiles/file/bodatovatinimiloraxiza.pdf In PDF document text
    • https://bonacorsi.it/file/47877544362.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3dce1831f1---36947879709.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/e47a934915ad43ab4253e65f56579b22/73100304716.pdfIn PDF document text
    • http://snypes.nl/img/customer//files/somifowanulev.pdfIn PDF document text
    • http://chonburi33.com/userfiles/file/wavetifisirarimob.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e93c05217294887cf567b84e1ec06ebc/63339833502.pdfIn PDF document text
    • http://kangs78.com/clients/66216/File/66616441698.pdfIn PDF document text
    • http://udemadriatic.com/userfiles/files/60376367482.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d95d513591---rozupugarudixivaw.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/249bcc6796613bde153af4a014af0603/tuxokuliwuxi.pdfIn PDF document text
    • http://uptownchantilly.com/uploads/files/muwizunotifegufomamut.pdfIn PDF document text
    • http://porpora.biz/imagenes/imagenes_contenidos///giwevirivez.pdfIn PDF document text
    • https://lacecinella.com/writable/public/userfiles/file/zosokezon.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7beb2211d6---tijojukakedodijutawene.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba69e36d80---66645572055.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/273609644fb3aabfeb4bb331b14dac72/76631034420.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/6dbrhpe2g3pg7vp3sm7a6d6753/12646470110.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/89979030945.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/a52be15a839f0b07fb28e6e3a8c349e3/gomojawapajowo.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/qd0s729si9n605rn1ps4qvgtp4/52144097662.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b06205185e---73789671131.pdfIn PDF document text
    • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/afde792f0d649da072773da875ecd94e/24686400780.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/f67d94b754064b621bdf120e0628a94b/58877391516.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=how+to+compile+and+run+c+codePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE890 10684 bytes
SHA-256: 4dab77e90b79548aa62e75884e0c4dc5678f9cfba8403e6ee6eb5465610d0025
font_01_sfnt_off000100fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001190e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1190E 17968 bytes
SHA-256: 157943f3b711f3f43a5d9bb72577eb9f4238dc0f9432dd034e4458bdcb128aed

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