Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ffb4472003a710…

MALICIOUS

PDF

80.4 KB Created: 2021-07-04 09:11:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: da7c8c65b4b69976eabe52c8a1ff6d32 SHA-1: 7a4a0aa7bedf2bab1a20594001cd731e364ea4c8 SHA-256: 96ffb4472003a710531c1e9258c15bd05dcb53214c5c3046faf8c32cb06e0df2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting it's designed as a link farm to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://wastran.ru/uplcv?utm_term=how+to+insert+text+in+picture+in+word PDF link annotation
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec7c226e60---lawog.pdfIn PDF document text
    • http://grimastone.ru/files/10665254985.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/7597161114.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/f8faf57303abb7b0679bf62c48513dbf/94589587655.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/lurexakilifeja.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160916934c6232---11514817129.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/6p5efbucdplh2mv2rkrs42fklu/wujokeropemajewonuma.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/rjlhrm0hpib7vqpig4ugbkhatc/dozikokerena.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a73bab5c0d6---donatisaxuvejiludelir.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/kitopiso.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/zamokebejifaxo.pdfIn PDF document text
    • https://bluetact.com/locktactyuma/userfiles/file/fonelitaxubipapuxeniwas.pdfIn PDF document text
    • http://cnhhgj.com/upfiles/userfiles/file/felegometexewidadube.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082e9656d353---90351241083.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/9148398603.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/570bdfdaae39ecf0280739dfd3b2e96d/seluligifufivu.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609b81bb9c1a8---94288711808.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/af4a3ba7a04d049bc34042e7b32b89f0/dolesar.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/543e5c7739b54d699174518f947bead6/jafamadolopubosifomuwan.pdfIn PDF document text
    • https://orig-shop-gsm.ro/ckfinder/userfiles/files/94359552012.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c29438008---midafolebizapewixubuxi.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160971a698258c---rofikupav.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_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 10580 bytes
SHA-256: 202030d31c53ee7a10bb1bacec0a9a109293670db8494a74e0d1d9c0a228702c
font_01_sfnt_off0000f218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF218 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010a2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A2A 16404 bytes
SHA-256: c38051b79685ebb2bab55eeac58d0112e2fcd6c47d69575ddd3a41625ba40b28

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