Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f614923c869355…

MALICIOUS

PDF

89.2 KB Created: 2021-06-26 20:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a62b29e7053e8ae1cf3945f6367e7fe9 SHA-1: 714199e9e14067f22741a55334f89e48a8830f04 SHA-256: a2f614923c8693556fe9f229609284a9795a0627b11cee68ccaeccdcd568041f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links pointing to compromised websites, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://inwebjor.ru/uplcv?utm_term=how+to+delete+all+messages+instagram PDF link annotation
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/aed0bb5f17aa664d6c501ce2d5055e9c/besubupoduz.pdfIn PDF document text
    • http://zonweringnederland.com/ckfinder/userfiles/files/81370945826.pdfIn PDF document text
    • https://soudurelausiere.ca/upload/editor/file/sefonogewilifegisitof.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/02740c2d93c987ce19ff4f94a32300f1/lusozujodisipixamudusip.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/sojukekadotubiliwopaxus.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/21e62d8ada325de3f4889d35af519573/lebone.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609844a47ff94---pufube.pdfIn PDF document text
    • http://kimhoatra.com/upload/fckimagesfile/98595346488.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/25onb5apjgj9uo9skp56cf4k8m/nironebomobelolis.pdfIn PDF document text
    • http://dent-pro.cz/pic/file/jubebiw.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/ud3963u2abh66q6dfhlo7sboc4/ripaser.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/cs4377ic2ru7p21cmkb9fan7n0/wusize.pdfIn PDF document text
    • https://ringid.vn/ckfinder/userfiles/files/83992451878.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609272da8193b---bomanudizib.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/9976gnrg67f8q18j9nal4fkqd1/vuxugawobibubezopodas.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609c997c76622---89340465516.pdfIn PDF document text
    • https://mysmartedu.com/uploadimages/files/48779468850.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609542b49d3d8---sokozapidifofojelajal.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e20c05be4---82060750697.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/ujd7elifgefb8bidfdtmt6tjro/kezodojifejuruzodakodiv.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abb4148be5e---34500998309.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/b0a5cc28af2c7bf4fe72a0e762ce0548/fejubolof.pdfIn PDF document text
    • https://gegeny.hu/uploads/file/suregasirewogumele.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/21a45658def863d11455e3a089abe4c0/nabamitupenij.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5d0932419b---75376183599.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160985fb723135---42159591330.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/sirinezurosazusu.pdfIn PDF document text
    • http://precedent.by/_newsite/images_from_html_editor/file/puremuxobakanukafotopa.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF5 16896 bytes
SHA-256: 2fdc07252eaf45ffbb2404b8a86151b6f47584db06ad5a14e7ef74cd83ddee9d
font_01_sfnt_off000126e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126E4 10668 bytes
SHA-256: 57a5295f6c6cc9473c7130ae5fa68075bf6aef8bab7f288577f6aedf8e777dfa
font_02_sfnt_off00013f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F18 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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