Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2c88284562f004…

MALICIOUS

PDF

93.2 KB Created: 2021-07-03 11:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 081c74250859bf59856cd932cf0f65da SHA-1: 2bf17498c9f537d9e8bb63c89840574785316db7 SHA-256: 3f2c88284562f004f0940b1b58a32fc1a7958731c611396da53298519f3c3a0e
196 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, and exhibits characteristics of a social engineering attack (ClickFix). It contains numerous links to external websites, many hosted on compromised or disposable domains, suggesting an attempt to lure users to malicious content or phishing sites. The PDF structure and embedded links indicate a potential for further exploitation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://le-lemniscus-incandescent.fr/ckeditor/upload/files/xikimuzoxova.pdf In PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce92bd8dc6---kewekaxo.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/dc5200f3a0c59822280ca207afd042f1/91025570895.pdfIn PDF document text
    • https://tigapilar.com/upload/files/lufizituk.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/34e3141e953f4d82aa6cc4ff76bb3430/luromeropaxalevubavopaj.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/sv22cb3lf4hq5gto2h67ns8f76/86104591745.pdfIn PDF document text
    • http://www.lugashotel.com/data/editorfile/57733231158.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087a2de9f8c0---gawojadazimularikalodo.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9b6d09c8a---5240396443.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/b82986461de065b0468599a505c7b55d/sexilepine.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2467cad96---91806118291.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b566fe07128---6029799203.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/2f2bfa066028d0a535ded3dc7a81344d/54008651583.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/bjdqvhe1sfec3um18ppvqhavc7/fugusazojavopanezaxivemat.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/43004517428.pdfIn PDF document text
    • http://kapalishakti.com/ckfinder/userfiles/files/61081983254.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/c0d9a0e12885f553df91249ae2c9fb16/55154195203.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4024c0882f---fowunofi.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/926f11d6c8732221cb0003e87d76b2af/20867657075.pdfIn PDF document text
    • http://amdind.com/userfiles/file/zevagonirurixa.pdfIn PDF document text
    • http://minipit.com/data/files/zivimojapanoke.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607522d1b0886---pifeluporobo.pdfIn PDF document text
    • http://nkcophs50threunion.com/clients/0/01/014062e559e26c1cf0711bcec4e573ae/File/vasuxoxarutajikenoge.pdfIn PDF document text
    • http://vimbark.sk/editor_uploads/files/xuxuzojuzofezefosewa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=unexpected+mode+trapPDF link annotation
    • http://irodori.kir.jp/files/file/visafedabes.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_off00010b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B43 10480 bytes
SHA-256: 095d99abf8973c5709f8185b07947645571d9c2ff5a19cb1d9f52acd69fd3e5a
font_01_sfnt_off00012306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12306 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B18 17248 bytes
SHA-256: c612d47474deb1071c4c83f64cfd1d24589b6a485c63c93efcae8920d596dfc8

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