Malicious PDF — malware analysis report

Static analysis result for SHA-256 029ea6670a980d82…

MALICIOUS

PDF

93.8 KB Created: 2021-08-17 04:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 8b5c101db98a834dbf67f32e83e72e76 SHA-1: 1313987feb2c57fd50b4dd498a2c0c91d35e08b0 SHA-256: 029ea6670a980d8227b15fddfee437350836f0976f2bb1e8931120d054625cb1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, likely intended to redirect users to phishing sites or download further malware. The document body is heavily obfuscated and appears to be junk data, providing no direct user-facing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://drafthe.ru/uplcv?utm_term=adobe+pdf+creator+gratis+espa%C3%B1ol+para+windows+10+crack PDF link annotation
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/640ce349c698f42458502f0377e38b5c/77952877546.pdfIn PDF document text
    • https://qnzar.com/files/femoba.pdfIn PDF document text
    • https://bandai-k.com/userfiles/file/laginotogelazegenakidewas.pdfIn PDF document text
    • http://maytinhgth.com/userfiles/file/pesapodalugiluduwosesuxo.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/c6l2tlk9lr41lfto2j18ehg1bf/48242438149.pdfIn PDF document text
    • http://fitviewer.biz/files/file/74826178760.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///82768301885.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/86964691674.pdfIn PDF document text
    • http://twxcd.com/img-aim/files/60081595916.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/773995db7d068dd6b72aad95d58f1270/xabow.pdfIn PDF document text
    • https://mamo-tato.ro/userfiles/file/90520592394.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611ad1d88c627---62675034069.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/2d6qv5pjt51jaop8vkibb7ufi5/63104937619.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/383b8658ac645ce6a4e9d22300db6839/64298876034.pdfIn PDF document text
    • http://puntolinea.org/userfiles/files/97432124795.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608eea9429d59---52102698524.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/hr3o87p8urcdpp097l100r4jk5/lururokuxire.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/5vrq21hl2ts25n2ijbho47obt0/xuroxujaverokukiterarit.pdfIn PDF document text
    • http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/k1eamls06qr4gt17hpssi22787/lidom.pdfIn PDF document text
    • https://satybharat.com/ci/userfiles/files/29998648291.pdfIn PDF document text
    • http://ceroki.com/image/files/56731105628.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/j4rsnn7k3oj9pi54c5n58ev1jh/xabizoxisotupejikor.pdfIn PDF document text
    • http://ever-pioneer.com/upload/files/44581329954.pdfIn PDF document text
    • http://chrisdepanneservices.com/Sites/cds/files/zewetixozigoxebixovirure.pdfIn PDF document text
    • http://bollywoodsalonskokie.com/admin/images/file/59020033544.pdfIn PDF document text
    • 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_off00010536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10536 11472 bytes
SHA-256: a8efd2fb179edcc946d02ad491e3dd05c2dd7c0e3cf3d1efe63853fd0316721b
font_01_sfnt_off00011fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FE4 17620 bytes
SHA-256: 40eaa7bec1fd9b263051868cf73121ed9827d51aff0d211066a3a9d8a5541e06
font_02_sfnt_off00014e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E43 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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