Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e8526051e9920a…

MALICIOUS

PDF

87.4 KB Created: 2021-06-27 23:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 14f01197eb8121804168d69372fe70e1 SHA-1: 4a34d00f3066e5a2d6596146a92d1a67d4e0b6b4 SHA-256: e5e8526051e9920ac2438884e06a533ca6151b5f1cdc539402a064844978de2e
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, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple distinct hosts, some of which are compromised WordPress upload directories. The document body is unreadable, but the presence of numerous URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or malware distribution attempt.

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 http://billedbutikken.dk/articlefiles/file/dipojakakelesimuvefun.pdf In PDF document text
    • https://www.parkgest.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c939854f7df---telapesibunozepufemisiwa.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f60621c624---golozuboxatuvomuwidaz.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e47b332280---54338252084.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2570e3425c---vujufesifilitefusivodid.pdfIn PDF document text
    • https://wulf-sanitaer.de/wp-content/plugins/super-forms/uploads/php/files/coo80430d9o0s31m1ei8cslbr1/tajiwebewumizakiwe.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf2d7bcbcc---fetekusodefafiv.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/079cb083162980834da8e18ebd3ff5b5/mabetinokeli.pdfIn PDF document text
    • http://www.lugashotel.com/data/editorfile/84622989334.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16098680b199a2---rofenerineratexezunelikig.pdfIn PDF document text
    • http://nnrhc.com/clients/9/98/980d61ede38c9a35fe3396fb65651545/File/61328611692.pdfIn PDF document text
    • https://egf.tw/test2/images/file/477245726.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/e6220b88530fd01eff1854b852c0b6e0/sefedimavotaramarawonugon.pdfIn PDF document text
    • http://staractivecollection.com/resimler/site/files/7708371980.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/l09baod9ea53jof4f162k3kht7/81306054549.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/lorimowimuvagiboxeko.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098d756950ae---dalurelekidekavup.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf239a183b9---80707422369.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/755d2b626af903c36b98ca7e1fc8db53/4945542197.pdfIn PDF document text
    • https://greenvalleykerala.com/ckfinder/userfiles/files/kuboriwanobebironid.pdfIn PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/30383620211.pdfIn PDF document text
    • https://perfecthospital.org/FCKeditor/file/bakuso.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1609899b75bed8---wifigunejojadirumekumusep.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/36e2d0daad739eb57d77db17e533da3d/10671276276.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=garry+landreth+play+therapy+pdfPDF 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_off0000f0c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000108d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D3 17620 bytes
SHA-256: a25a83480cc1e92382dc291c015e9e3f35aedd295f50ba1a07c5d678f88431a9
font_02_sfnt_off00013774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13774 10368 bytes
SHA-256: cd7dbf57e72d865534001834d3f11a9ce13490eba17e54bf1d75f0540b83c4a8

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