Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e8796c27085a13…

MALICIOUS

PDF

86.6 KB Created: 2021-06-27 14:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b713587e8ff74aff7fbad7729ededc67 SHA-1: 40fc0a61c983bb2a07aee64d8a885609c4f998b3 SHA-256: e8e8796c27085a139c9fee36e999876ae4c6c49408ca934be6667901a2c1d5f1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The presence of external URIs and the overall structure point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://nomylo.ru/uplcv?utm_term=anna+paquin+days+of+future+past PDF link annotation
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/16087d62325455---32893188088.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1608418eb59fc9---2213540424.pdfIn PDF document text
    • https://wagaskar.com/media/xujuneziguviluriguse.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608998435ec03---wedakozonimezevasosifaja.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/nipof.pdfIn PDF document text
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607783c4751c6---wurajebonopuni.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1896ee5de---dakepupevu.pdfIn PDF document text
    • https://brod-plovdiv.com/images/vunarawuk.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092885108a66---xozeg.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b52e1fbedbb---49316384290.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/97p893f9mogqj3hvh7a45387f7/sifaxa.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/mepuxavepanasi.pdfIn PDF document text
    • http://rogo-rotterdam.nl/files/kewadifol.pdfIn PDF document text
    • http://apartmaji-zunicmile.com/uporabnik/file/mizapeweginakiromotoxu.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/pofomijosusezomeluko.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe0c074e37---zeteziloxiroraj.pdfIn PDF document text
    • http://laulumaja.fi/ckfinder/userfiles/files/fisiwezurupemifimo.pdfIn PDF document text
    • https://bitree.ru/ckfinder/userfiles/files/tonuxiliga.pdfIn PDF document text
    • http://textingrights.com/userfiles/files/49543142465.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/6a2eb0837a1a6de67df35c8eee5f5709/pogalukeba.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_off0000f11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001092d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092D 16928 bytes
SHA-256: dc0eb68de0029af79daf4e1e735837b86597be60b738c9663086b20f566f4417
font_02_sfnt_off00013565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13565 10784 bytes
SHA-256: 3a1adfa1e704e0af54fd6ca3df82795c21c79d632af44d10978ea74e92f443fc