Malicious PDF — malware analysis report

Static analysis result for SHA-256 30221d9d805c87d9…

MALICIOUS

PDF

76.7 KB Created: 2021-03-30 04:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1ebef350d741605093c9e08f8b2d4438 SHA-1: 56d6b646153a7a4dbc4dffb98ba393a89cc90cde SHA-256: 30221d9d805c87d9cf887729b400ef0011a3da6a8230cb1a943713a5340c6f44
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/award?keyword=growing+sugar+beans+in+zimbabwe+pdf PDF link annotation
    • http://madusotiju.22web.org/abecedario_fonetico.pdfIn PDF document text
    • http://dekopubetalukaz.22web.org/likojefetuxijox.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/bomadosibi.pdfIn PDF document text
    • http://modebedunizux.iblogger.org/mufumafiburerizipelonovi.pdfIn PDF document text
    • http://zomuregunaradu.iblogger.org/23140068350.pdfIn PDF document text
    • https://biwasigefo.weebly.com/uploads/1/3/1/3/131398444/petojizalupebu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mejifavo/cancionero_cristiano_con_acordes_de_guitarra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ebdefe1-348c-4b08-9ae7-3cdc4c2e5861/buvawodutinorato.pdfIn PDF document text
    • https://b1c30c75-ab46-439a-884d-3836ae4b8a49.filesusr.com/ugd/2d1648_588c4956bca04e43bdc795deec18072c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rebomedug/what_does_a_rhetorical_triangle_do.pdfIn PDF document text
    • https://e37fb4d6-fac4-4cb1-96d9-cce2dae532e5.filesusr.com/ugd/ed2751_3daf68c08a6b4f6c8db2db9fd66c0e93.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/mefaxarupetitekazedego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/affa284c-0066-4079-b4d3-d59bc37104a6/which_book_is_the_witcher_series_based_on.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/calendar_template_2018_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/41941895139.pdfIn PDF document text
    • http://zezazemana.epizy.com/b_w_matrix_804_manual.pdfIn PDF document text
    • https://aaf8962b-2ea5-4403-bfea-7c32f2b3f77e.filesusr.com/ugd/8f3a65_ef1bcc927fd14edb896c9b6c680487d7.pdf?index=trueIn PDF document text
    • http://ritopagagibuxu.epizy.com/65352240107.pdfIn 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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB0C 5640 bytes
SHA-256: 2d61f4059ce871b32871ba8e67bad46893cf3bece2ab16c9586658c96f6d6703
font_01_sfnt_off0000fe47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE47 11188 bytes
SHA-256: efc0effd74ed753c2e34669742c5b4ed66022b87869f4c0387d6612669579873

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