Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f64eb5d13eb66d…

MALICIOUS

PDF

103.0 KB Created: 2021-06-30 04:35:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: fa9679a800beaa0e9ab117c8424a12ff SHA-1: d39a0559639528353b98cbc03ee81b91353863bd SHA-256: e6f64eb5d13eb66df6914b5f37b6a76cdf1222073588f29c217944cbe0b31f9e
176 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of external URIs and a raw IP address literal further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9687

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://perlawarmii.pl/userfiles/file/4494396965.pdf In PDF document text
    • http://renovator.cz/files/file/xezelakeminireraneduwud.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/c32929cf0cf95cae3aa5e7acc12f9745/webixokamijibibuto.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/50863274753.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/defenoduwineniwe.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/06f0e56139c48f1c399aab000a1bd91b/72369010017.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc5719c2cc---61873376875.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adec9e57f67.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080278122b83---zifunukedu.pdfIn PDF document text
    • http://kasargod.net/uploads/file/79264150061.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160be9cd7b2abd---64649402306.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/bd37e6e045e50110970ea2931637e237/25083733544.pdfIn PDF document text
    • http://granitemountainranch.net/userimages/sugagizit.pdfIn PDF document text
    • https://chmelo.hu/sites/default/files/file/fazumu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160775bcae5b11---pizip.pdfIn PDF document text
    • http://kayapaliinsaat.net/file/setasizapiluropiboxajex.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/15086968e30ffaebbd2294d49daa5d69/31461321476.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/a9kff62mkqtum0e55aq28tadr2/96401329780.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/famunevapujixi.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608512c14cf3f---48867832938.pdfIn PDF document text
    • http://westernstudioservice.com/admin/userfiles/file/xifumulapetewol.pdfIn PDF document text
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/a90413e20f5efbe425cff7927c8acd4d/padafuwopeda.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b470c23622---romowofekivuwovani.pdfPDF link annotation
    • http://broadviewlibrary.org/uploaded_bvlib/file/8535932519.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=argument+from+ignorancePDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010050.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10050 3432 bytes
SHA-256: f3c2a4507c610cba0b940f58cea3267bf45fbc57e97f55d6676b3b085015f1d3
font_01_sfnt_off00010d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D30 10544 bytes
SHA-256: 3b106d1251a95682c23299e5df4d697bd79e1cbed994c90bfd77e1ca18535a17
font_02_sfnt_off0001253f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1253F 18020 bytes
SHA-256: 9f4ea59f83478990ce04f6f73ffdf8fbeaa4bc86156fda2d3d54fa317d48c851
font_03_sfnt_off000141e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off000159f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x159F5 20488 bytes
SHA-256: 5bb51dbcf52ab8ccf8556b555297ca5351c725d3e1c0c1b0fde993198fda9744

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