Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c7c1d6fa436c6d…

MALICIOUS

PDF

86.3 KB Created: 2021-06-26 03:51:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: f35cd314b970025dfa73c6b98c3d2e22 SHA-1: d2f323039296aa36e6b283d06610b37b2484412a SHA-256: e8c7c1d6fa436c6da7a1e5bec4c9a86423ea1e875164e1d42f8dc2b453bdbf00
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress sites and potentially disposable hosting domains. The embedded URLs, such as http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160d21923228d6---xozudexefofa.pdf, are likely used to distribute further malicious content or facilitate phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cd9ac5c22b2---fadasikowula.pdf In PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/c7eac7d93addda5323da5a819a557be0/vusavox.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16078117ef2b25---pamokiwiwifuja.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087fa35f210c---pogigovakaxufipelobumemo.pdfIn PDF document text
    • https://tungqibiotech.com/upfiles/editor/files/zudadejotasud.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/71c34e42172de3bbdb045f618cce7e20/wexojinojozedikinoku.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820132ace7e---nobipaserapeloxal.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b29cf414241---17299042678.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/nobimetixoruwera.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/3abb765ab93dc50ef3a2b134f300c801/guxafaxenoliloves.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c85eeea8cce---bomoxotakobux.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf2adca3b3---robevofugejowekudebo.pdfIn PDF document text
    • http://deurenhanger.nl/userfiles/file/38708051646.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/08462e9455e8d74dc4034c946bf21a6a/kuxemun.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/71061a7913ad363c6784a24cec57d379/69981570645.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/favebimilesedex.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/160d21923228d6---xozudexefofa.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/tujepe.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/josawajox.pdfIn PDF document text
    • http://szpital-sulecin.pl/images/fckfiles/file/xopusomusekukevi.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0e1721178---32626818496.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/08c6749d41c89374cb9b37f86f70f2cf/36442455608.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=nails+on+brownPDF 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_off0000f205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF205 10076 bytes
SHA-256: af4c234898c75aafc68a122a695135b4efd61db489d2855c99a18c32fe35b44c
font_01_sfnt_off0001088e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088E 16888 bytes
SHA-256: aabbbb06d81a2addf6a1ce9aa53298bc303c26b65aa54c3385d5317748461070
font_02_sfnt_off00013477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13477 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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