Malicious PDF — malware analysis report

Static analysis result for SHA-256 b061845d60d423e2…

MALICIOUS

PDF

88.5 KB Created: 2021-06-27 12:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 2b94ec73ae9fd68626a7eb7a1f1342e3 SHA-1: baad1bbb7f264ab6bdb706eea0d1c02574b79696 SHA-256: b061845d60d423e2c76a1acae04f1b4f074c471dfb9e2bb11139b4c64b909e29
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple external websites, with several links pointing to compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure suggests a lure document designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://clinical-pain.com/pds/userfiles/files/76828442641.pdf In PDF document text
    • http://axiomestates.com/userfiles/file/fasupoferevowoxifetolin.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac10b308947---23915198099.pdfIn PDF document text
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/77e6d3f1349f4e9f874329d81de74c3a/78869255835.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a82c2c0e7a7---mubetetomek.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/34ed28894805f7a0255f4de4ca037537/43890726652.pdfIn PDF document text
    • http://travelport.pl/userfiles//file/32650892238.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/kivalowob.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/1ed8f666d6b96914fc4701204620bc64/vufuvokolomukizafaxokep.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160b28c550b22b---bexagunofanekodovuneti.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16085add89810d---86518611598.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/2410930qkkp8rokatgtvdolj8f/fulavelujajarizetubedek.pdfIn PDF document text
    • http://rulada.by/upload/editor/files/bifugitufodokulijabez.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/6ca45368f6ad88653571fff0b6ee1730/nurotopoxuvupinasi.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/c4bjipbs7d4u10bu2j0viftrus/57650220218.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072652f502e4---rarogi.pdfIn PDF document text
    • http://www.electricman.in/demo/frontend/web/uploads/files/voloban.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/1e64d159b4a643ac1f5733c490d83a0b/69878450702.pdfIn PDF document text
    • http://erdivigado.hu/userkepek/file/pugevejunususugiwisuxek.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b2021367a00---25402898912.pdfIn PDF document text
    • http://kientrucnhacuagio.com/upload/files/80679441019.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/kiu73r1jqjt9vb5plsv5o2thhd/rubolavexap.pdfIn PDF document text
    • http://cn-junsheng.com/upload/file///202163321534.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=metaphase+simple+definitionPDF 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_off0000f97a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97A 16672 bytes
SHA-256: 82474695318faf57b3afb161acee665e66317c9b99c4fd70c0213615b68b5603
font_01_sfnt_off000124c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124C1 10656 bytes
SHA-256: 8c0a630e06a5f9db48de93cccfa5e9d67f5dd8ab2a1430bb0ca646bb4623fde8
font_02_sfnt_off00013cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CF4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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