Malicious PDF — malware analysis report

Static analysis result for SHA-256 69fddaf6513eedb2…

MALICIOUS

PDF

95.3 KB Created: 2021-07-26 02:53:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d6772b9d157bdb4d6487f91c84a00279 SHA-1: da533b5eeea23ff66b17dcddd181cb61058cd525 SHA-256: 69fddaf6513eedb2e7e0a420c83f508b3bb48fd9fe06dfbbe566d2b47d000774
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of multiple PDF files hosted on these compromised domains indicates a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9896

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://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/95dfa39c0a5e7cf4bd472c3a4d128b5a/fusufegezel.pdf In PDF document text
    • http://artechq8.com/beta/uploads/files/21756661601.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/c4a694e8193295cb84fd095eaa9a42cb/nunuxowasufisof.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/39599503072.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1607911582f731---78383018183.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad84fd74c43---93046051623.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/3ae8ap8vnj2kmtpbrmfl19dpei/96713237841.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609600e02d9ce---fawukaraxajumel.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef2ca54548---sujefejopojukuwufodi.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160919a47b9955---duninenovelavu.pdfIn PDF document text
    • http://imi.vc/upload/files/tagewugukogido.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/63465843495.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/viduxuk.pdfIn PDF document text
    • https://www.babetravelling.com/ckfinder/userfiles2/files/87120013748.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/5c598c353780eb5ee05489e110ec2993/13648389869.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/59971f8d3b985f9c3a808382796c357e/12767333420.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/dofafovaradesefokivolujo.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609c35344da7b---60434837341.pdfIn PDF document text
    • https://elminhaj.org/userfiles/file/mibozepudaferuz.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/6pqjqc6cuds3bcl5ib9ipffu1u/naxidadojaforemapufejukoj.pdfIn PDF document text
    • http://africa-emergence2019.com/userfiles/file/bozisi.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ed087ca7a---futeririzufugavoxigogojam.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/1nbjn33ctvg2qmh22db77cph31/bugumusepuvudev.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/pajelobidajadese.pdfIn PDF document text
    • http://alicekhenrylawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/5186202233.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/51dsv02qlp19k5ekq2tblprli1/54758742840.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=the+significance+of+donoghue+v+stevenson+todayPDF 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_off00010fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB2 10852 bytes
SHA-256: 1666c9b77143ef52381d475e090d1d7a65d233ea4df6d4422019f9e843bcc0a5
font_01_sfnt_off0001289e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1289E 17272 bytes
SHA-256: 58d98cdc732aeae71ec53ad12697b927de55633407c997225a837d4bf72fd626
font_02_sfnt_off000155c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155C8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1