Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee706b01203b121c…

MALICIOUS

PDF

87.4 KB Created: 2021-07-17 21:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9f89f67e695a391571b9e9049507ac0e SHA-1: bc4b8c1678f13e8608d41aa86185f2cc39c57da5 SHA-256: ee706b01203b121c643d6db26e41774e581fef7aac3767e600ffe23beb7b8944
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution lure. It functions as a link farm, directing users to numerous external websites, many of which are hosted on compromised CMS platforms or disposable domains. The presence of embedded URLs and the overall structure suggest an attempt to lead users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://aftaplan.com/works/peepsparty/html/upload_files/file/rifefa.pdf In PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/ud5684np1aqm61b2qf66hebbb1/xikegin.pdfIn PDF document text
    • http://energo-market.ru/sadm_files/74078161643.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/78e67a7ddd1a8bbc3c70f4dfa08e5ce6/62762074233.pdfIn PDF document text
    • http://modnyi-buket.ru/uploads/files/81776128189.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab6b1c563a8---48557630943.pdfIn PDF document text
    • https://thuaphatlaihoanghuy.com/uploads/files/46637700600.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/3f18502b06fa86eac44b01fdbfdc2370/xesevu.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/vexaxuzefobufetotimozaxuj.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e0d2b8349f7---20068632655.pdfIn PDF document text
    • https://digireg.cn/upload/71237484095.pdfIn PDF document text
    • http://suachuaspa.com/upload/images-content/files/walovadu.pdfIn PDF document text
    • https://chief-moving.com/editor_upload/file/35805647361.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/52020730840.pdfIn PDF document text
    • https://csp-pub.com/stockages/files/31687966308.pdfIn PDF document text
    • https://caravanandre.it/wp-content/plugins/super-forms/uploads/php/files/1a2590b5f0264131fb64d08ee1016017/10853660554.pdfIn PDF document text
    • https://pharmnet.cz/ckfiles/files/files/banaxigunakepedip.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/8e641b899b6d056821f354d39cebd15b/dadetuwafulovedorebupap.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085caa7a7eff---xuvejupoxuluzajoduvi.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160a5eaa443ad0---2444700417.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/bedezolonisimewodak.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/c3e2784f86bd7bf06ecdfbe7d4983f78/vatotonine.pdfIn PDF document text
    • http://hondaotohaiphong.vn/upload/files/waxetilavifiroxazi.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/7990356331.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=noroton+heights+train+stationPDF 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_off0000f28f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA6 10316 bytes
SHA-256: df2ec3e12e633c5896f1c2c95efa1e0102cc9fdee974bde41c4e04c2212f3f7f
font_02_sfnt_off000121dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DC 17600 bytes
SHA-256: 6e68471738142efb5ca7dff7651391391005bc32a03d94d9f026301ed6b387fe

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