Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca022269200e2203…

MALICIOUS

PDF

73.4 KB Created: 2021-09-12 07:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 03e0134b6ddfd7b26691c596d93ec3f4 SHA-1: 4a320294f69599ac30af074d6b51727cbb5e491d SHA-256: ca022269200e2203a01265ca2f12f413837eabdbb5beed6cd8fd15aef0fef0fd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm heuristics strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

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://broadgatecapital.com/userfiles/file/99723525458.pdf In PDF document text
    • https://gamaconsultores.cl/upload/file/sejavowo.pdfIn PDF document text
    • http://rockpapersun.com/upload_mce_image/file/fawij.pdfIn PDF document text
    • http://rlmlaw.com/images/edit_images/file/xedixamuzipubeso.pdfIn PDF document text
    • http://myrbacken.se/login/ckfinder/userfiles/files/gubivif.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16132fe4e65696---jodorixuvojemelaxaludel.pdfIn PDF document text
    • http://donghozibistore.com/luutru/files/pavugazonegarenule.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/51226929399.pdfIn PDF document text
    • http://mycoapaisyl.com/webimages/files/16154010956.pdfIn PDF document text
    • http://socukorglutamatmentesfuszer.hu/ckfinder/userfiles/files/jupulareru.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613a753c48624---47932385508.pdfIn PDF document text
    • https://laps.pl/userfiles/file/jomovup.pdfIn PDF document text
    • http://aaz.sk/editor_uploads/files/gewegozibefunilu.pdfIn PDF document text
    • http://fsnmmaterials.com/UPFILE/userfiles/files/92743136991.pdfIn PDF document text
    • http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/digep.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613d75efc5bec---44437639677.pdfIn PDF document text
    • http://chalappuram.com/userfiles/file/83956630094.pdfIn PDF document text
    • https://pfhotel.gr/ckfinder/userfiles/files/51329774829.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/606ffd6544cbba1a2581927ac96e9062/lipewekijidaxevolunej.pdfIn PDF document text
    • https://audit-advisers.com/userfiles/file/41252730113.pdfIn PDF document text
    • https://weeb.nu/userfiles/file/70967949486.pdfIn PDF document text
    • https://atlantidegattico.it/file/20786540648.pdfIn PDF document text
    • http://ybshajiang.com/userfiles/file/2021-09-04/2109041228039549918vkggy23j4oy.pdfIn PDF document text
    • https://big-affaires.com/img/pics/files/luzowipiwa.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/nosefumofamefur.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/d2bg49ctt2gv2pq2dlpkud7510/biwajanigi.pdfIn PDF document text
    • http://phrabat.net/UserFiles/File/43248128465.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=vbucks+booster+no+verificationPDF 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_off0000bbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3EE 16788 bytes
SHA-256: 9d0bce9dfaf37c2d59d6a28c7c89c74bc47cb1128e8455acba9b3131749a9869
font_02_sfnt_off0000ff6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6C 10648 bytes
SHA-256: c22d36773cfdd6446946470500032cb6fa201774e1ac3a517a3beec25e81eb40

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