Malicious PDF — malware analysis report

Static analysis result for SHA-256 07141ccf9576bb29…

MALICIOUS

PDF

80.1 KB Created: 2021-09-11 06:25:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: cee8d6ff9d565ae244468118f6832697 SHA-1: 9bbce0abe165adf634ad2b45933a794ddcbf206d SHA-256: 07141ccf9576bb29d6b839320474afb396321f9c586916251d1dc6fe5378044b
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is a phishing or malware distribution vehicle. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 https://allytemp.ru/uplcv?utm_term=orca+scan+apk PDF link annotation
    • https://kanat.com/upload/ckfinder/files/dogibigefojetugag.pdfIn PDF document text
    • https://qeyeoptical.com/ckeditor/ckfinder/userfiles/files/5055991441.pdfIn PDF document text
    • https://gruppopolidori.com/upload/image/file/godafolibemofopevijipaleb.pdfIn PDF document text
    • http://palet-school.com/files/files/laruluzexixijositex.pdfIn PDF document text
    • https://konferencii.ru/js/ckfinder/userfiles/files/bolopulisaguga.pdfIn PDF document text
    • https://rcvizovice.cz/ckfinder/userfiles/files/76762221073.pdfIn PDF document text
    • https://quangcaowebsitecomvn.xemlaco.com/uploads/files/sajarugalexosegawesexatu.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/dabc36229e117080a1fe1f03d2e24752/fopinodojad.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/40613625985.pdfIn PDF document text
    • http://jamones-luna.shopcloud.es/ckfinder/userfiles/files/gerodob.pdfIn PDF document text
    • https://www.hippocratio.gr/ckfinder/userfiles/files/porisukuwovulo.pdfIn PDF document text
    • http://irina-beha.com/ckfinder/userfiles/files/12698429854.pdfIn PDF document text
    • http://silarperu.com/UserFiles/file/xujapopalobuxi.pdfIn PDF document text
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/ht73f4drjiovend9ighnqn1399/97163017609.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16131fa03dc656---zuxajikijumunovapize.pdfIn PDF document text
    • http://pastadimatteo.com/ckfinder/userfiles/files/46751498949.pdfIn PDF document text
    • http://xn--989ap7r0xbd5x.com/upload/fckeditor/file/32663462303.pdfIn PDF document text
    • https://groupekheidri.com/ckfinder/userfiles/files/xevutemezediziwidemokewa.pdfIn PDF document text
    • http://roseeskin.com/userfiles/file/20210903104557.pdfIn PDF document text
    • http://szyoujin.com/UploadFile/file/20210909024916479.pdfIn PDF document text
    • http://tongrentangthai.com/UserFiles/file/kunid.pdfIn PDF document text
    • https://fo-prefectures.com/pages/files/bofawesesirumaja.pdfIn PDF document text
    • https://simon-daulte.com/ckfinder/userfiles/files/nijifajupapile.pdfIn PDF document text
    • 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_off0000d6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EE 9996 bytes
SHA-256: 6c9dfaf2ec41a92aecaa0d11411631b5c251781e1fc3aa6d2965631345b0a657
font_01_sfnt_off0000ed4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED4A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001055c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055C 17644 bytes
SHA-256: 26dcd8ec7e3b309b510c427e804b5b61b82a8d84ed50958733422f7cba410621

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