Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fe7511b3c6e2378…

MALICIOUS

PDF

95.4 KB Created: 2021-09-02 02:30:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3a402154caecf9b5a50504bcafc7a487 SHA-1: 8330d8c79cc1c5444fcb14bfad12a399b754e8c0 SHA-256: 6fe7511b3c6e2378f8bf9bab0b509fe3327acd700bde49d02c87544753a1d0c3
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains embedded JavaScript and numerous external links, many of which point to compromised WordPress sites or IP addresses, suggesting an attempt to host malicious content or phishing pages. The presence of embedded JavaScript indicates a potential for further malicious actions, such as downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fcc32e6266---puxasame.pdf In PDF document text
    • https://laps.pl/userfiles/file/62013915311.pdfIn PDF document text
    • https://bibonatura.hu/ckfinder/userfiles/files/16965310631.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608caba31d955---9066228000.pdfIn PDF document text
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/fb40c85c8b3a4f9df7e4c4b90a5f33ac/kugotojirodakofavefa.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7e3945aba---sifotujubutozer.pdfIn PDF document text
    • https://dodatnojamstvo.com/userfiles/file/98240874078.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071dbec9b06b---30370951736.pdfIn PDF document text
    • https://makeswebsites.com/clients/c/c8/c8c605999f3d8352d7bb792cf3fdb25b/File/95666806130.pdfIn PDF document text
    • https://www.pessin-location.fr/ckfinder/userfiles/files/99916440872.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee1f66af1f9---55765960601.pdfIn PDF document text
    • http://mamam.by/upload/File/file/rapuneruzawasonasirepado.pdfIn PDF document text
    • http://cathyourhair.nl/js/ckfinder/userfiles/files/rixola.pdfIn PDF document text
    • http://ketoanaca.com/uploads/image/files/dafodexazorizasebogekerav.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100a3ff13071---11547073915.pdfPDF link annotation
    • https://ketdoanbus.com/webroot/img/files/fatinejo.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610613a40bbb8---tikurek.pdfIn PDF document text
    • http://bjerkelunden.org/content/files/userfiles/file///62304981760.pdfIn PDF document text
    • http://www.goldenlantern.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe9e64e50a---kigojowezixifukeluzekovev.pdfIn PDF document text
    • http://fructusartis.com/i/File/pedanefitigelam.pdfIn PDF document text
    • http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/16acorl9s7v9a03ii30ku2u6ah/pixojunim.pdfIn PDF document text
    • http://waterlootour.com/FileData/ckfinder/files/20210801_6CC244EA1B844FEF.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/cu3cbqqoj3n6th3b16o8sfis67/40101721146.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f3f0b78e9---90957776591.pdfIn PDF document text
    • http://www.celso.org/download/fakakoxo.pdfIn PDF document text
    • http://planbmedia.hufiles/zilulixowegedeb.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608972a7f0a55---batakurul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=9th+class+english+project+work+unit+1+with+answersPDF 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_off000109dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000121f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121F4 11184 bytes
SHA-256: cedc8fd7149f17cdf615ddd0d492657d90dbd5a214ebeb55ab377606efd684ac
font_02_sfnt_off00013c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C27 19128 bytes
SHA-256: ce4efc105396f01f916c5f9714a1569cbd9259a5ff916bfb1d6a2c5ccbab8346

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