Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d40c1f56b3894f3…

MALICIOUS

PDF

75.6 KB Created: 2021-06-19 14:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ab79077744beca2ad63321706dece15a SHA-1: b39d805739b74c908f9f1d3af9a483490dae4908 SHA-256: 6d40c1f56b3894f34f6a1e21277f99f876b7e1ebd1ebdd602255dbd1df0d5644
156 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm. The presence of 'fifa 14 mod apk' in a URL indicates a lure to entice users to click on these links, which likely lead to phishing pages or malware downloads. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://catamma.ru/uplcv?utm_term=fifa+14+mod+apk PDF link annotation
    • https://almoheetmanpower.com/public_html/userfiles/file/likozilukazixa.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/9mnqha6vssjo16nb9o1qop7j3f/83374754553.pdfIn PDF document text
    • http://datev.hu/ckfinder/userfiles/files/rarudokewopaxizare.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1a9a404c11d55379741c977114af199c/kekurodokenubezejibara.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/qsm67nt9ke8bfhl46ofaqm9ts7/29775442233.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/160acaf5e5fe22---44961927730.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/xotasukenamekisulavu.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160c0746d03b8d---fuxukuvimigavutusar.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5b8f7e45b---dulukoxamaxirapu.pdfIn PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/0v43oqoa3jdb457khbhl2utsnk/61763498666.pdfIn PDF document text
    • http://dokumsuzgec.com/userfiles/files/dasar.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d1a3b30e581a933304b035f2ece54e57/jixiviwufonetibuv.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/a0c2e48741cd3f06f793db4621ff69b2/16452670126.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/41608367862.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0800ac666---74002582410.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c98b6dea7d---93004450096.pdfIn PDF document text
    • http://zeminyerkaplama.com/upload/ckfinder/files/34667604880.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/b9afcbf060d7d44c1b312ac3551cbb61/vedowonubajovow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEC2 5040 bytes
SHA-256: 2ea67e45fcf879fa9b09e6143ee6fb4d082a8852cad4768bf06bd4902f6a198b
font_01_sfnt_off0000efeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEB 22068 bytes
SHA-256: 471edd526260ed326e6871633e88217fd3169ef8235c86499e65d21eb39ee7e1