Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e5420929207043…

MALICIOUS

PDF

89.5 KB Created: 2021-06-26 23:10:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 89a59512aac84e158a21bcfb3c1235c9 SHA-1: 7fa2f7f44ee13320dde2f0b43e1b4a4e69cdb420 SHA-256: 49e54209292070438dab7b2db7d87d375e7b1289c75063586afad6f5a83a482b
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the structure and URL findings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

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://castilloexterior.org/ckfinder/userfiles/files/99884298097.pdf In PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/bd043719839474ca45a95fa9c0c89d3f/947870089.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a152607c239---63854687367.pdfIn PDF document text
    • https://isabellepieman.com/userfiles/file/96702881599.pdfIn PDF document text
    • http://canxetaianhduc.com/images/file/wibubaxufemapivim.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/82074818394.pdfIn PDF document text
    • https://gamaconsultores.cl/upload/file/42237033780.pdfIn PDF document text
    • http://ck-tct.ru/userfiles/file/mepivixexipinu.pdfIn PDF document text
    • http://brooklinehs1964.com/clients/6/6a/6a3559cec3eb17f551da2d864c8c85ab/File/66731366604.pdfIn PDF document text
    • http://sosnovgeo.ru/userfiles/file/79366692548.pdfIn PDF document text
    • http://galluccifaibano.com/userfiles/file/18386515532.pdfIn PDF document text
    • http://stepsforstarlight.org/clients/c/c6/c668404594a1c08d975ab50c7bec58f6/File/kunuvegalodajexiwamolan.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/2e5d10eadb16661773af68be1042baa4/5021052717.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/9c193a490fc5e36554a9c47f2fd5c4cb/29618238277.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f6d7133026---juworazojupoziwobilub.pdfIn PDF document text
    • http://abwplazaview.com/uploads/files/14415676071.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607901b8b6e5b---soviguzonoxinosujo.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b9af98f71---kofunitimogorananubal.pdfIn PDF document text
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/92841139965.pdfIn PDF document text
    • https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5dc5313070---90471539842.pdfIn PDF document text
    • http://askort.pl/Upload/file/ritalu.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160741f8dbcad3---gixumetudem.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1607df62512b5e---kalexogivuxovewa.pdfIn PDF document text
    • https://bbpartner.cz/userfiles/file/29527839121.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1608683a62cf35---81663148869.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=cardinal+points+definitionPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF97 17208 bytes
SHA-256: 0e626d1f88b2499e60e7989f956b4bde842106bcc7d755090985c0d92e6358b3
font_01_sfnt_off0000e8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F9 2448 bytes
SHA-256: 57a5a38739959dd9a23a1f79cd8fd3ff8b42d1d099c191ae141f5b3fc5164579
font_02_sfnt_off0000f36d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF36D 20576 bytes
SHA-256: 145901e87dbe81bc9d1834b26b974491a654e8b95df790b1df5ed209dede0db5
font_03_sfnt_off0001273b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1273B 10520 bytes
SHA-256: fa058f8bb403458ae3d292c219c751e9c4e428db2988895e13ec233dcd4e726c
font_04_sfnt_off00013f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F44 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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