Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d8169ed695346e…

MALICIOUS

PDF

86.0 KB Created: 2021-07-05 10:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9bb6f17ef8077b09052b3acfda32e03e SHA-1: 3979eba0f3b2320c855339471529ba0e6f48e2ae SHA-256: e0d8169ed695346e5cffbd5a794e60d6501eed9e9c93e64d443a11ba59d37341
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of embedded JavaScript and numerous external URIs, many pointing to compromised CMS uploads or disposable hosting, strongly suggests a phishing or malicious redirection attempt. The document's structure as a link farm further supports this, aiming to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/h5kebecohl98peietl3q436ljn/zogexurepeputovol.pdf In PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a1e2b0a34---daduvenofekebival.pdfIn PDF document text
    • http://serdceprirody.ru/userfiles/file/livoki.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/86412608853.pdfIn PDF document text
    • https://atlastoursntravels.com/userfiles/file/sofesowajepuzorezori.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/6ba4ebaf8f6334593989ef84567ca158/tasejutusoto.pdfIn PDF document text
    • https://ferdavagnar.is/images/fck/file/31872053194.pdfIn PDF document text
    • http://coinmarketsuite.com/ckfinder/userfiles/files/xidelokabuxizujufolu.pdfIn PDF document text
    • http://dothanhigh1970.com/clients/6/63/63ba8bdc6fdca46b25bb56d5732eafc9/File/limirinipadofesowep.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aed351be88c---guzirikivixube.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/0rsr1f7pbi2fbsm7or99blah75/vanegejagopetaxasexifeda.pdfIn PDF document text
    • http://sk-massimo.com/js/upload/files/dosilukogabefoko.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/49a869ebe46a94c67c22222c3f5b3af4/99460885068.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/gidolazoj.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088fdec79538---xuzela.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcf0e1f34f2---fukekejojixivotoluxu.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160adf14b9c7d0---rofusoxirez.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8be7200fed---pikabezuwixamebokiji.pdfIn PDF document text
    • https://readandenjoy.ae/userfiles/files/94153353166.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/6831721672.pdfIn PDF document text
    • https://ebooksweb.net/files/file/wakosapunakenemozizem.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/7097efc3301bada13ad4b0a39ad9571e/86365255727.pdfIn PDF document text
    • http://sieuthikhoacaocap.vn/upload/files/39287652849.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/fc4egtsureuctqq50trsp6rlb7/75734305665.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-6-14/20210614201059157097.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=how+to+open+outlook+data+file+without+outlookPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC27 16920 bytes
SHA-256: bfceb91a9289d421df3443d3e44cf724d7f2fe0aff4ee6ac2e9aa164b826d854
font_01_sfnt_off00011857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11857 10596 bytes
SHA-256: a2400e56a2dc2c3e6082ea9df7984039315b0873ee7e3f35fa4032ff2a385a13
font_02_sfnt_off00013072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13072 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1