Malicious PDF — malware analysis report

Static analysis result for SHA-256 860380ff7f52eb09…

MALICIOUS

PDF

86.7 KB Created: 2021-09-16 05:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 1a7da85d01a71e7f804c20d1b75ba6a8 SHA-1: e292cf7cabd3882ba6b5065326702ff0824cd625 SHA-256: 860380ff7f52eb096cc7464f05b39591d096dcbfabdcbefce4f2c96c88bb57c7
156 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm pointing to multiple compromised websites, suggesting a phishing or malware distribution campaign. The PDF structure and embedded URLs are consistent with techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://vamaconsulting.sk/userfiles/file/28718306190.pdf In PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137783043ec1---befajavutenalavejune.pdfIn PDF document text
    • http://rescue119.org/userfiles/file/48758915091.pdfIn PDF document text
    • https://europartner2.pl/uploads/31253041741.pdfIn PDF document text
    • https://matharu.ae/userfiles/file/tomenuzimodexetegatogexu.pdfIn PDF document text
    • http://d2dgroup.net/upload/files/56628515124.pdfIn PDF document text
    • https://hospvetcentral.pt/site/upload/file/72295051740.pdfIn PDF document text
    • http://adirondackseafood.com/ckfinder/userfiles/files/93201374640.pdfIn PDF document text
    • http://haithuanphat.com/uploads/files/82859847017.pdfIn PDF document text
    • http://wolfpackbasketballacademy.com/content_docs/61084752041.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zinoka.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161318db8c16b0---14602361638.pdfIn PDF document text
    • http://www.w.radeton.cz/ckfinder/userfiles/files/6849954951.pdfIn PDF document text
    • http://hepiran.com/cache/fck_files/file/lagadekid.pdfIn PDF document text
    • https://iaido-iaijutsu.ru/userfiles_exc/bonolelenexigetatebi.pdfIn PDF document text
    • https://smwebtechnology.com/arishayurveda.com/userfiles/file/mezeresi.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed8a4e9d22---95132927909.pdfIn PDF document text
    • http://mkngsp.ru/upload/files/19684226324.pdfIn PDF document text
    • http://hzdsbg.cn/uploadfile/1631756216.pdfIn PDF document text
    • http://jfe.hk/userfiles/6860912246.pdfIn PDF document text
    • https://ap-qatar.com/userfiles/files/pafabalatojaregiferafuj.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613188be5b982---47435757024.pdfIn PDF document text
    • https://pianotuningdarwin.com/userfiles/files/jalujukike.pdfIn PDF document text
    • https://thietkeweblongan.com/upload/files/lavikuvuxiwugijevebivudo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=paired+sample+designPDF 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_off0000eddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105ED 18496 bytes
SHA-256: 0f52e4df5cf38498d6af4c02b3cf09a185deffe99acb274bcf622c7f9596ca53
font_02_sfnt_off000135a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135A6 10520 bytes
SHA-256: a8e1811f48e51e49b43e2be1f8a24f8497945bb04d292a1a28f305eb96486c0e

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