Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c945ee2ab42d49c…

MALICIOUS

PDF

86.6 KB Created: 2021-06-27 02:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 9fadb8da744d08eb140086de834ee013 SHA-1: 522fe872210edd70e4edea0fe79f9c5b71a2bd0d SHA-256: 7c945ee2ab42d49c41c9b8fc78499aa4cd5fcccce01deb5890982c65ddba8d80
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites, suggesting it's used as part of a phishing campaign or to distribute further malware. The presence of multiple external URIs and links to compromised CMS uploads points towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://huntic.ru/uplcv?utm_term=thank+you+message+for+speedy+recovery PDF link annotation
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/13ba29e1b8b31254a69e1671f60cad26/75419013232.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/fb7afd47217beeb7ef4712fa22ec8fc2/vitutilixiduta.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/79159227103.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/omnfpuvbnor4cklh4vrbmnelth/49195169206.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee24a1e256---67400812487.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/6238bec30b80a1e1d7a8a9daaf9dd824/fesiverefow.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160819dd1b8e1e---silifonidujabimifafi.pdfIn PDF document text
    • http://trevelci.ru/ckfinder/userfiles/files/sakufenibemejibiguzo.pdfIn PDF document text
    • http://martonaroniskola.net/userfiles/file/26808921226.pdfIn PDF document text
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac42f10e626---bebabowode.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608505578353b---39284166379.pdfIn PDF document text
    • http://jullien38.com/ressource/site-image/files/zuwuxajijedosab.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/2o9svaq77tgg6f3shen19dvqbk/59600868085.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/2u60ro8vlt6pdjacdkprnd9rv3/15025870013.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071169e31ea1---ninufajijib.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160abee25bfdc7---fagogu.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/73423732684.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/scph1m3jta2bc3u8rgi446lvt4/46119116862.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607542827d856---30403163241.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160c2baa4da88b---zipefokuwiwesodesizom.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b07d9aab043---56556231519.pdfIn PDF document text
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/b54a84d43317658408ff669f80dfd3cb/jofasa.pdfIn PDF document text
    • https://advance-pack.com/editor_upload/file/66787714612.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_off0000eef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001070a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070A 17052 bytes
SHA-256: edf69573af9ad333416023ae9d0f0d256747e2deecc3f0ef2731b2ff1dc184c7
font_02_sfnt_off0001332b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1332B 11168 bytes
SHA-256: bcb9000fa88ac4a9757299743fba2f978b6b05e7c3231965f865db2a919b5eed

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