Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2eff37f1acde23e…

MALICIOUS

PDF

91.9 KB Created: 2021-07-07 10:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: f4c8763f8b93dc0738064e055e735761 SHA-1: f84cbd389d38b6922b33e9ea6de64e49c4aa838b SHA-256: e2eff37f1acde23e2a6c858e33f967a46cc51f4135155efa089efad44100bbcc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics indicate that this document is designed to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://nomylo.ru/uplcv?utm_term=how+to+flip+part+of+an+image+in+photoshop PDF link annotation
    • http://myafmc.com/clients/a/a5/a51d49d85de18111a3d718c63a5e5081/File/dobegogesizeramif.pdfIn PDF document text
    • https://dhcom.vn/userfiles/file/kivaxedodanejevepoxiveva.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/9f8e286cd193550c3ce5e93b83dcf99b/karenimezewikuv.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ecda281ac---67593803410.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1ba73bcc7---28179495816.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/896510e043a2f15827016b562ad9c0d9/keleremi.pdfIn PDF document text
    • http://thebrownsfamilyreunion2008.com/clients/81208/File/1237399020.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c23d8e1eb6---92844892356.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/70878957365.pdfIn PDF document text
    • https://tavio.ru/files/file/wekonuvigeze.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/51bb74f451f9b7b29810e34b78d85fa6/nipuguwafumakegaxelokazix.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/f280832eb53166efde24cf89b4470c83/42553999912.pdfIn PDF document text
    • http://innotec-industrie.be/userfiles/file/suginezig.pdfIn PDF document text
    • http://edgecs.net/documents/luroxevemujaxaka.pdfIn PDF document text
    • http://gocreate.termall.pl/upload/fck/file/poderotasezebezatafexen.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/e97c62642c072e8211b91bc65e934aa8/xinozosobopotozuba.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/97268698232.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/53785504009.pdfIn PDF document text
    • http://bajajsports.com/userfiles/file/mixesemumosavum.pdfIn PDF document text
    • http://veterani-pushkino.ru/userfiles/files/sofobunoxutusenu.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/54692027528.pdfIn PDF document text
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/g52lj6m5vm0pu9mk8v6pehlpt3/tatokudatudegotabusifij.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4adbd071e7---pageziteduvigetasuv.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b7618d5647---pigemukuketow.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_off000104d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CE9 10884 bytes
SHA-256: 1615dcf1380a9bee2ced3fe2828e5b2092456d43fabbf89080e34deff264f558
font_02_sfnt_off000135e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135E2 17192 bytes
SHA-256: 989af420a0f5c6267af63b38fb8cc162aaf262a571c1124f8cf5423e26ac02a5