Malicious PDF — malware analysis report

Static analysis result for SHA-256 2014aa054dabba75…

MALICIOUS

PDF

81.6 KB Created: 2021-09-20 01:36:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 07572feeecab911cff10a7c0b3921b85 SHA-1: 7a3d4cb845c07258f635c2b4e13d5b3946550e36 SHA-256: 2014aa054dabba7595923e08ea4d5eb28c8af1336dc60ddb9334c946872224cd
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to disposable domains, indicating a phishing or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to download further payloads or redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://inercial.es/uploads/files/43031195936.pdf In PDF document text
    • https://hoya.hr/UserFiles/file/baduvovezavakoxovo.pdfIn PDF document text
    • http://mibenjamin.com/userfiles/file/86262605001.pdfIn PDF document text
    • http://talesma.com/E/file/37472432010.pdfIn PDF document text
    • http://theemasternetworker.com/ckfinder/userfiles/files/rokejidifurixanudo.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161401ad296aab---jopujonejagiwupajedetol.pdfIn PDF document text
    • https://jcmimoveis.com/userfiles/file/79076758941.pdfIn PDF document text
    • https://profesa.net/userFilesfile/palemuwadiwuxofu.pdfIn PDF document text
    • http://phuquytravel.com/nguyenvanlinh/files/8856794756.pdfIn PDF document text
    • http://gyarmatilovastorna.hu/userfiles/file/tebesikarevig.pdfIn PDF document text
    • http://veterky.ru/ckfinder/userfiles/files/8230485759.pdfIn PDF document text
    • http://olguanaokulu.com/upload/file/zikejudon.pdfIn PDF document text
    • https://elesud.it/img_pagine/file/zukevomido.pdfIn PDF document text
    • https://silky.ae/images/bulk_images/files/wutojewukujekapugejafaze.pdfIn PDF document text
    • https://akgoz.zemta.com/uploads/files/12046634567.pdfIn PDF document text
    • http://japhina.com/upload/file/81271927240.pdfIn PDF document text
    • http://coeb.eu/userfiles/files/muferamum.pdfIn PDF document text
    • http://lisaarkinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fugopukuwegusubonumad.pdfIn PDF document text
    • http://miyagi.chi-kara.net/Upload/files/zitonenafukubiji.pdfIn PDF document text
    • https://konferencii.ru/js/ckfinder/userfiles/files/28944970140.pdfIn PDF document text
    • https://stalbeckers.nl/userfiles/image/file/43343108847.pdfIn PDF document text
    • http://velapower.com/glwh/UploadFile/file/2021091009450973499.pdfIn PDF document text
    • https://www.moxiclear.com.au/application/third_party/ckfinder/userfiles/files/molazoxujuka.pdfIn PDF document text
    • https://ipekyolumedya.com/resim_galeri/file/bugiguvulajidederupogizu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=droid4x+windows+7PDF 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_off0000de0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0D 10120 bytes
SHA-256: ddd5850d5a918562b96f6b0a5e0dc47446d15ccc45aac047ea0534475cd0828f
font_01_sfnt_off0000f4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CEA 17228 bytes
SHA-256: 2bc21191d7d74b72a0a608da294705b0990f86bae1de7ffe87ada9428ae29c9a

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