Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eeb887d5f40a94b…

MALICIOUS

PDF

88.3 KB Created: 2021-09-12 08:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 774d5a54f9dae034911cf75f00aebfd1 SHA-1: ec2ef310531b3673a18a0fc9d66b9b332561ec42 SHA-256: 0eeb887d5f40a94b2aa420f51e62e5e2c9d3430323bfbec15e5ea16580e3efbe
164 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier with high confidence. It contains a link farm pointing to compromised WordPress sites, suggesting an attempt to distribute malicious content. The presence of a 'download button' lure further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/53e4ceaaaca0b4cb3507ee90c217f7d2/fomoxadurogivo.pdf In PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/adfb1936d61d8aeb619bcd90a5fff7e2/34160686918.pdfIn PDF document text
    • http://benly-carson.com/product/files/33886696884.pdfIn PDF document text
    • https://pharma-tools.pl/galeria/file/venefesasajewan.pdfIn PDF document text
    • https://chambredhotes-savoie.com/ckfinder/userfiles/files/69848373427.pdfIn PDF document text
    • http://alvitraders.com/files/wototubibabibitamelogale.pdfIn PDF document text
    • http://atthaya.com/file_media/file_image/file/jalitixanatumozamevosupe.pdfIn PDF document text
    • https://esz.jp/img/editor/files/muxofafomakikabebulix.pdfIn PDF document text
    • https://alcoquimicos.com/ckfinder/userfiles/files/talujufadaluwotenolis.pdfIn PDF document text
    • http://cdkuysuujk.handysociality.com/upload/files/gemelojefexenorudufuzo.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346813633eb---sufuvutepof.pdfIn PDF document text
    • http://alocainghien.com/uploads/userfiles/file/92722908062.pdfIn PDF document text
    • http://kuhomania.ru/ckfinder/userfiles/files/tuzab.pdfIn PDF document text
    • http://kaushalacademy.org/ckfinder/userfiles/files/bexulowanubuzuke.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/ae90ki32r7fflrh6thaij2r0es/36519655017.pdfIn PDF document text
    • https://happycolaborativo.com/uploads/files/mesopoluveb.pdfIn PDF document text
    • http://naoshima-habitant.com/images/blog/file/12405464704.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/22572681089.pdfIn PDF document text
    • https://tourgardan.com/basefile/tourgardancom/files/bujejako.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/48jtmlaaeg20ii0ff5v748s433/pojawo.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/33836421056.pdfIn PDF document text
    • https://thietbigas.net/media/files/vovipijaxenozuwati.pdfIn PDF document text
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/9296030974.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=pokemon+x+and+y+rom+3dsPDF 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_off0000f08b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08B 10652 bytes
SHA-256: 5c6fcda6147a08cb7589ab7b14bb7f0a87204696bc54ae9fc2a6969650a7aa76
font_01_sfnt_off000108fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108FA 19416 bytes
SHA-256: 1a7650d7af455276584dd0138080ad458fa22ae6b1855a8dfbae4d0dc2a05043
font_02_sfnt_off00013b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1