Malicious PDF — malware analysis report

Static analysis result for SHA-256 06950b9345b353a8…

MALICIOUS

PDF

89.3 KB Created: 2021-07-25 15:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 1140ca7e60c57906fc43da330124e095 SHA-1: 0229643d67db10c62ccc122a7c81d2795c96a39a SHA-256: 06950b9345b353a88f24e09a7b801c1e4c718d18dbc359b61c6b891c17d19a05
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to compromised WordPress sites. The ML classifier and ClamAV both flagged this file as malicious, specifically identifying it as a phishing or trojan PDF. The presence of numerous links on disposable or compromised hosting suggests an attempt to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1609d18d94f19e---refilubomopugo.pdf In PDF document text
    • http://changrung.com/ckfinder/userfiles/files/voviziperajimalezuvive.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/c75e68fd05dd9efdde8b15af96b955ee/buxirefutereza.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/cb83c059608a916d3c273d9bc1e7dd7c/mitamow.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160f3104be7002---40287960501.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/9a01b1bd9f5db5eacec86837fdf63ff1/juxolokizirebow.pdfIn PDF document text
    • http://solsethreunion.com/clients/f/f5/f56c6d7ba488b74ef40bd02d3fc4d0b2/File/judes.pdfIn PDF document text
    • http://womenwhorockarkansas.com/clients/4/4c/4cfcdabbb7b8ad81bafe9a4295858145/File/jetivetalovu.pdfIn PDF document text
    • http://etabetasurvey.com/userfiles/files/2429073239.pdfIn PDF document text
    • https://edukiya.com/wp-content/plugins/super-forms/uploads/php/files/a69be5afd79603161df57ea1e241b184/72141947192.pdfIn PDF document text
    • http://xn--49s538bo8ux8c.net/userfiles/file/mexamegilorekupuxewa.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7829d21b2f---59908245265.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/regijixazevukuw.pdfIn PDF document text
    • http://accronline.com/userfiles/file/jimupilekikowava.pdfIn PDF document text
    • http://dallassymphonyleague.com/clients/1/14/14bb4a025281f1a32078cb68571f7cf3/File/likazixewunopazaxoxejese.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ec82c3503---pabowakoz.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/75335008375.pdfIn PDF document text
    • https://mps-india.com/userfiles/files/20250889298.pdfIn PDF document text
    • http://alliusie.com/userfiles/file/gusiwibotejifisug.pdfIn PDF document text
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f16fe82b46---tunufitolujer.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a17c9aeb99b---55279220736.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/fbdc0ac919b4de7b4ee48db87fe1e3d2/93570085996.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=what+is+the+difference+between+literal+and+nonliteral+languagePDF 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_off0000f041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF041 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10853 20196 bytes
SHA-256: 0d4533af402c02cabd84e6fd95148502870b342d4fd1f3c72bebbe42a03941bf
font_02_sfnt_off00013cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CD9 11076 bytes
SHA-256: 64d764929c52e10b5e5944d7369bbf82ddc87279b93ad428f0504960889417ee

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