Malicious PDF — malware analysis report

Static analysis result for SHA-256 e513a0d5249470e5…

MALICIOUS

PDF

112.0 KB Created: 2021-07-01 22:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7f3769172547b48766d5bceace3e101f SHA-1: 390ae73d9bd6b9352dbecad0b32ffae71b56feed SHA-256: e513a0d5249470e54907af01c9193f37a87492e833299036a0fc235fdf0f6cb9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to redirect users to malicious content. The embedded URLs, such as http://caryhigh1987.com/clients/41333/File/29221264022.pdf, are likely part of this redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9666

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://caryhigh1987.com/clients/41333/File/29221264022.pdf In PDF document text
    • https://airbays.com/userfiles/file/vapul.pdfIn PDF document text
    • https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/9773b80985ba5a0d9239b5971c415bf4/rejaxifonafosenodid.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607da71a11684---gunulemirudijuxak.pdfIn PDF document text
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ceeeafa1b---99559238654.pdfIn PDF document text
    • http://stinpo.com/ckfinder/userfiles/files/14305089768.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb20b24d6f---79478707099.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/67106460254.pdfIn PDF document text
    • http://epmachine.ru/d/files/lekulowinezojep.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/17lkim5894cku88rvcv7eohi4t/16230751774.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16071a68166b4f---kiwejez.pdfIn PDF document text
    • http://faradtvandor.hu/picture/userfiles/file/ponetamusixusujiz.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609737c60be23---73162406641.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160758273b5792---69490688047.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/7gk63l6kmij2fslkjpql0m0bs6/pojorapamadakaxigewivoz.pdfIn PDF document text
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/92268918125.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1bda4df053---rajes.pdfIn PDF document text
    • http://donghocasiochinhhang.net/uploads/userfiles/file/fejabizumejam.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/1608581ece7b86---42197188552.pdfIn PDF document text
    • http://stauarchitetti.eu/userfiles/files/guxuxubofakulaw.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/zabege.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16089af422482d---79523486967.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/b644414d537b5f617e3cc892d0cde185/lepoluvepupu.pdfIn PDF document text
    • http://ypperfect.com/ckfinder/userfiles/files/vabagunepot.pdfIn PDF document text
    • https://egf.tw/test2/images/file/wuxiwixabupituzube.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160831a1cc8e83---49229440219.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=my+two+sentsPDF 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B9A 9896 bytes
SHA-256: eebe9714f289b4109c398ab18b11b8633e84483bf1cfb012291035977bcf6119
font_01_sfnt_off000151a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000169b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169B5 17248 bytes
SHA-256: d3d6f4504af838945306080b4400631cedbf37398073f1da3c077cff68b021f5
font_03_sfnt_off00018157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18157 18680 bytes
SHA-256: 1fca5474415156e6684f2edb5a68d3dc789c645a5b88590cf05fcf00b04e1ce2

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