Malicious PDF — malware analysis report

Static analysis result for SHA-256 5065e41117ec802f…

MALICIOUS

PDF

85.7 KB Created: 2021-06-26 22:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 1ea376c032878e8e43da674c2ef46d52 SHA-1: 9b83f9f1d706a231f19970ec155bed1d87e8f687 SHA-256: 5065e41117ec802f7b7280a0480f0a8c746f747d29162d6a50d8b33f19272235
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm with numerous URLs, many hosted on compromised or disposable domains, suggesting an attempt to redirect users to malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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://schokoladenfontaene.de/idata/bizinexuxisux.pdf In PDF document text
    • http://ccforum.kr/uploads/file/1621626899.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc48375d54---67567185790.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/kemuzekotezufe.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16082d43e4708e---nazal.pdfIn PDF document text
    • http://sibinetweek.ru/userfiles/file/39124578523.pdfIn PDF document text
    • https://299-45.com/CKEdit/upload/files/31715458700.pdfIn PDF document text
    • https://yucekalipmakina.com/tsrm1/img/userfiles/file/26446223261.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16080b5dee0bab---54069502200.pdfIn PDF document text
    • https://asiarsolutions.com/userfiles/file/28965877782.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/2ad27e0564fc239c5bcc886c698926d0/76183290822.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/facd02ff849e8e327341345d1861c3c5/zokiwinena.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-6-10/20210610110632408420.pdfIn PDF document text
    • https://castilloexterior.net/ckfinder/userfiles/files/25843457740.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/tijowajuroxilajurubozuj.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0833a6b876---88853273420.pdfIn PDF document text
    • http://lohsclassof70.com/clients/3/31/31ca850ff086a58b81c8700e10a01852/File/34663202849.pdfIn PDF document text
    • https://binarbaidfabrication.com/public_html/userfiles/file/137077342.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/16656786914.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/cmrgol9p0s7vvenn8nk3mtlsm8/limabogiwizuzefimasen.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d51a387ed7f---bupozesasujuru.pdfIn PDF document text
    • http://ckpak.com/fckeditor/userfiles/file/22455145624.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/3891f5c7edb074f09ff02437cc7c616d/zuvugaroji.pdfIn PDF document text
    • http://gasthaus-steinkirchen.de/img/editor/file/xifevatawefusoburokuriji.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/36519999702.pdfIn PDF document text
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e822228fa---14269208308.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=britney+spears+titsPDF 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_off0000eddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 16988 bytes
SHA-256: 13b60ff6ab52f9f5e5d7194f3067e93fbd85640456355ba05917796828bbd408
font_01_sfnt_off00011a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A27 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001323e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1323E 10248 bytes
SHA-256: 97707baa2e5d6f2217f3a90f627286e40476804a6f7712b31fbe70670bb887a4

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