Malicious PDF — malware analysis report

Static analysis result for SHA-256 adbe891b1a66e67b…

MALICIOUS

PDF

117.0 KB Created: 2021-09-12 02:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2be02a6ab3f94cc52ed4257be76bb505 SHA-1: ccab56a76b39aef3f3df2d8bb0000fdb2e5715e5 SHA-256: adbe891b1a66e67b82cd619e21a2b2baf97009e0a3f5b94e6d6fc7773a607440
156 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous links to compromised websites, suggesting a phishing or malware distribution scheme. The presence of PDF link farm heuristics further supports this, pointing to a tactic of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d271f33ed0---9494446932.pdf In PDF document text
    • https://georeno.ca/userfiles/files/maminidumojanewid.pdfIn PDF document text
    • http://agriturismolataggiasca.eu/userfiles/files/nupivatipotaf.pdfIn PDF document text
    • https://value.ae/userfiles/file/kebexabuziwepoxad.pdfIn PDF document text
    • https://tapuionoticias.com/ckfinder/files/57637472190.pdfIn PDF document text
    • http://vigen12.com/userfiles/file/71360260472.pdfIn PDF document text
    • https://stop-remont.ru/ckfinder/userfiles/files/4541609848.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/hpbab1bjqs17dcsco2rtdor61p/81122562773.pdfIn PDF document text
    • http://www.prodomasa.com/ckfinder/userfiles/files/jikabepabu.pdfIn PDF document text
    • http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nibibagunuluzutumegaluwaj.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef14c73e49---57153039544.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/66567230799.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b9becbc147---bajafuwujitaxupofesu.pdfIn PDF document text
    • https://www.mds-horizons.com/upload/files/55299359178.pdfIn PDF document text
    • https://tiemhoamo.com/data/dulieu/files/womufev.pdfIn PDF document text
    • http://dorapeyzaj.com/userfiles/file/lexokoxetiwemakuf.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/0e867e727f101858f92536289c3dfe71/83153655465.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/80328698981.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/xazenepetojaka.pdfIn PDF document text
    • http://3sdent.com/upload/files/80601115892.pdfIn PDF document text
    • http://thewhitmerlawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bukawixaveledixijoponok.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/86285706138.pdfIn PDF document text
    • http://charolais-hessen.de/write/userfiles/file/zozasadupeji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=atari+2600+romsPDF 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_off0001631c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1631C 10376 bytes
SHA-256: 13d27568afb0dfb565213bd712da65d023fdea5587610ccd01c2240c503f6094
font_01_sfnt_off00017ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17AB7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000192c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192C9 19872 bytes
SHA-256: 2cc0b7635548d1f8ffc88ad7e26cec0c37dfce4676f9ea4117d3dec5b0fd3756

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