Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09f092d899fb8c7…

MALICIOUS

PDF

81.7 KB Created: 2021-07-09 04:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 626ad077b2b75f8deb0b1f65fdb9a55e SHA-1: f95ae04e5e1a4af030d740d8600b81d723c4c84b SHA-256: e09f092d899fb8c7cd63d55360571a244b1d38e35dffba967a26f66073949820
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for malicious content or phishing lures. The presence of external URIs and link farm heuristics indicates an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608722c63a26a---45556832138.pdf In PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16075e7d292f17---nepiviruruxeris.pdfIn PDF document text
    • https://rybczewice.pl/userfiles/file/moxixazogapigaguzuvoviliv.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/35f6ef1a2889dda66681a5f3d6be8dd4/fanipubomuxexube.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607adec6b021b---39443637727.pdfIn PDF document text
    • http://ronaldtan.nl/images/photo/zejawasofujevutesasepup.pdfIn PDF document text
    • https://fibaquitaine.fr/cebatrama/userfiles/files/59239446349.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3a21e7ed8---mafizek.pdfIn PDF document text
    • http://transchem-tech.com/Uploadfiles/files/38228492594.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/fbdcb72965c2ab29288c4ea97fb2dd35/96186166586.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/hgul8g7aub9i1un1gq8ktms332/pafewiwukibomerebife.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a8439bb20---27631376353.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/69329027146.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/857c7012ca313b277f4900f771cd805d/giseburewojefuwisugibip.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac790bba98b---38079021867.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b265731f374---kufoxepizulogozijoluragam.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/94755240165.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/pi88d6qld6rgkk07kj43iqrite/3109407376.pdfIn PDF document text
    • https://urbanlivin.lu/userfiles/files/zatonagini.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//91635706139.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/wivinej.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/3876bd76a9fab4ca3a3f7cbd2b409c09/gigixokobitevuw.pdfIn PDF document text
    • http://honda-vo.com/upload/file/xagurumepewiwuvarax.pdfIn PDF document text
    • https://la-klamm.org/userfiles/file/polipijojiruxelifabekukal.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=parting+is+such+sweet+sorrow+that+i+shall+say+goodnight+till+it+be+morrowPDF 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_off0000d58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ed9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9E 18428 bytes
SHA-256: 0771cd2349855b6cfc98cf65b3ecc1a48f910615b44f42800fd0eaca1c90655f
font_02_sfnt_off00011c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C54 11256 bytes
SHA-256: 8736f357bc89425376c7d02349c7d2094318b5e17b3e80450d11a35e17e3590d

Open this report in the interactive analyzer, or submit your own file for analysis.