Malicious PDF — malware analysis report

Static analysis result for SHA-256 059a667b345fef0c…

MALICIOUS

PDF

79.9 KB Created: 2021-06-28 13:28:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 35607f1e58c9b9444ad2899d5a04ecc9 SHA-1: 21829a25e08da842d7f9a1f5d4d3c15da1559ce0 SHA-256: 059a667b345fef0c4f8881aeb242ef276ac4b67d1ec778c1aa669a94b3db00d0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs that redirect to various domains, likely to distribute malware or phish for credentials. The presence of external URIs and link farm heuristics strongly suggests a malicious intent to lure users to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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 https://queure.ru/uplcv?utm_term=pdf+to+psd+converter+free+online PDF link annotation
    • https://burlingame.com/wysiwygfiles/file/27889463071.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9fd058beb---48321134440.pdfIn PDF document text
    • https://lesura.net/userfiles/file/zumogarixukijite.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/385cc526160ddc3b06d5c12a2635127a/32531415534.pdfIn PDF document text
    • http://venusland.vn/app/webroot/img/files/3429402914.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/buzorukav.pdfIn PDF document text
    • http://abnicum.com/files/file/77963355088.pdfIn PDF document text
    • http://www.netcorp.hu/data/editorfile/jutizidaxexisir.pdfIn PDF document text
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/sojibumupagirekukotir.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/16089a040ba4df---disusu.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ac8870671---kigaronaxawox.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607437e13415c---faguzozujezawokenogiditor.pdfIn PDF document text
    • http://www.alcera.ca/userfiles/file/1289992246.pdfIn PDF document text
    • http://campingwithconvenience.com/files/files/kazekakudobisixovaguxe.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c11888e3879---wubomusozixad.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/8ccfc0d28081d5b62785b44737721595/pejajemifunujumalav.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a26cb9a7670---wuketusorazafiwozibisoxo.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a879b91bd---mazokar.pdfIn PDF document text
    • https://tckontrola.hr/files/24116059205.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a798b48b01---49660540752.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/370c0fb78d33148c0e4a5541b6cd06b3/61894807755.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/758bf48a163cf6765064feaffe60fe34/bajewujiwefewufu.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/gijakaxuxudugedevoboj.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b97944f04b7---divaja.pdfIn PDF document text
    • http://csc-021.com/userfiles/file/20210628021350_wmgr93.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_off0000d7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A1 10520 bytes
SHA-256: 149f7c19d42fd1d7c2ec99a624cf004b1c4b6b459923c1e2c6ff56a399062e2f
font_01_sfnt_off0000efb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000107cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107CB 16352 bytes
SHA-256: f26508ccbe25a21830c1eb07f31ff83283f4add745127a13e62fd2b65899b7f0