Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e1eec1ec051ca6…

MALICIOUS

PDF

86.5 KB Created: 2021-09-01 14:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 8e515e65b9d3253f9a6aad2a6c7661af SHA-1: 626da817f61451135c977b04b48932d3e1c6a2ba SHA-256: d2e1eec1ec051ca6bf942efcc3bd605d51f8d23354c97bdd4dc183205ef35adf
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as a link farm, with many URLs pointing to compromised WordPress sites. The ML classifier and ClamAV also identified it as malicious, likely a phishing or trojan distribution attempt. Although no scripts were directly extracted, the structure and URL patterns suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160804c06d5a2f---femixilexatezokeg.pdf In PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/cbe461008289e80bce346199624c42b9/21134369253.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/zonexeviparowa.pdfIn PDF document text
    • http://rochesteradams75.com/clients/7/77/774a1ed2e17b5a3c8fe4214cc08eab78/File/ditof.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/2a70ed4eb2b8d2def6c634510d162576/52026629065.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/bo098gofvkb45ffviln3i956os/94252623835.pdfIn PDF document text
    • http://dfh-consulting.com/userfiles/file/sutemawamomijupe.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/8ddef28ffcffbaedc06340c16b34a05f/72784665753.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/50129554817.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/c7838350c42438eba678ed7cb218f1c8/30235823602.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/586377024.pdfIn PDF document text
    • https://lordoptika.hu/files/files/samugegubulojezezepa.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607195842ff9c---90768311807.pdfIn PDF document text
    • http://icmasistemas.com/userfiles/files/karopivanuvapewixideb.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/amp4ibumks6ivis13f7id2ukqq/timurikuk.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/e52ca3acdf8a42ae457715058bcde705/33990413159.pdfIn PDF document text
    • https://jamurgoreng.net/contents//files/415169266.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/qnoekml7r0v97ndaelkuem4570/63475355459.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/rilupalexad.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160cb4ec6a6f9a---pigatapuparokumur.pdfIn PDF document text
    • http://dalnoboy.org/data/filestorage/upload/files/nujodoxerid.pdfIn PDF document text
    • http://citra.cl/userfiles/file/88353514675.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c462d7059b---netuxidutelimumowowukisik.pdfIn PDF document text
    • https://mimpishio2bet.com/contents//files/supuke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=whale+evolution+data+table+answersPDF 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_off0000ee83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE83 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10695 17384 bytes
SHA-256: 995ebd58513b553ed8d60b6fdc4630fc4bfc6cd99772ac3c7a7f3ea7c71a3c0d
font_02_sfnt_off00013372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13372 10732 bytes
SHA-256: 93300d3ae429d3038eb6b7da4d9066a56681a31bd26019d428db56cb3c20f476

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