Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee8da6e29b94be7b…

MALICIOUS

PDF

86.0 KB Created: 2021-07-04 16:44:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 7ac3f81eb48184bdaef83b5dab31843a SHA-1: 27db656ba32064db29d8827b306fbccaf8ba48a4 SHA-256: ee8da6e29b94be7b389a424a8341f064e748f8ef3719bff7b7b112cec21e6295
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with many URLs pointing to compromised CMS upload directories or disposable hosting. The primary attack pattern involves luring users to click these links, which likely serve as a distribution point for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 http://soles2walk.cz/data/file/40063292052.pdf In PDF document text
    • https://uleshuzatabc.hu/files/file/57335392810.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/70f7c77342a9077bfe5663018febd7c0/jalulufoke.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070bc4cbf286---84057826188.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6241de8169---30186579481.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/89925d0773734d48f381d908ebc032b7/joputi.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab4c565ca6d---nebivora.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/71337576475.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/4bb8bdd80810127c8a8569396b3c2545/tovokuxejilaxasuvunu.pdfIn PDF document text
    • https://espaciocultivarte.com/ckfinder/userfiles/files/niketenejadosivifeluf.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/go7lak89h2paj0isatugq2ati4/960255873.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/molomesejinidavolupinati.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/714ef6bdcb2d28ada21648f7c8a9340b/85385617442.pdfIn PDF document text
    • https://www.icslights.com/wp-content/plugins/super-forms/uploads/php/files/294e17de2799dd46a5f48434e3afb403/lizunavapisizosetumodo.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a2a68682d1---mivadu.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/440b02448a4844bc837f32edb55feca6/35067117049.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/b5474f4ceb167820ad279154aa45cebc/62639106269.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/5508db4e7ca9d63326553f10efdbf0c4/53122423261.pdfIn PDF document text
    • http://mosjob.ru/images/file/jejer.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081cf5f7998e---55722174956.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071904c72857---gotojerebapejoderufurifo.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcf09bdf00---gipegiwi.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/2e202400448bdd73f29c81d724c4db3f/nukenadigedu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=muppet+in+garbage+canPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000106d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D8 10448 bytes
SHA-256: c35c1dea6275a51cc550aa5ccb2f7ea403c542bc90ff3d26c50f48e5a0778bb9
font_02_sfnt_off00011e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E76 17164 bytes
SHA-256: 62c266f79287d9e4b65b4f80bbc7ed6eea0d91072d9a9a544f891b7bdaa3e01c

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