Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e30f543c62f2830…

MALICIOUS

PDF

82.3 KB Created: 2021-03-19 11:16:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 742bc610fc61341e718add4140ed6b6b SHA-1: 87e76ae06e721ecc4c41ce75b855f09df9e602eb SHA-256: 7e30f543c62f2830ee0adcc81ae84311fb9be0ac5e9d5b5d084ff08f66e56a59
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which are hosted on disposable domains, suggesting a link farm or SEO spam operation. The primary malicious URL identified is 'https://jumiwimov.ru/strik?utm_term=what+size+battery+for+ride+on+mower', which is likely used to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://jumiwimov.ru/strik?utm_term=what+size+battery+for+ride+on+mower PDF link annotation
    • http://fortuneocredit.com/toyota_prius_2010_zvw30_service_repair_manualjzprc.pdfIn PDF document text
    • https://doxezasofe.weebly.com/uploads/1/3/6/0/136088479/minubumafekojizuj.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/venozenuvi.pdfIn PDF document text
    • https://jexavozomuju.weebly.com/uploads/1/3/5/3/135334786/sumuzuganopeko.pdfIn PDF document text
    • http://experiment.website/dodge_caliber_dash_lights_not_working5oetz.pdfIn PDF document text
    • http://optamorem.com/logitech_g710_blue_reviewvl6ir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502268/normal_5fe20ac8bf6e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366973/normal_5ffe66407b28e.pdfIn PDF document text
    • http://shopwithsale.website/pilupufivususuxexexalaidjyo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_60223c24b5d30.pdfIn PDF document text
    • https://gofubemasuxa.weebly.com/uploads/1/3/2/7/132712405/527c9190e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_270bbab957c54c00a6a3a58ec54011d5.pdf?index=trueIn PDF document text
    • https://721ea522-a1f6-4523-903e-24b3c8014629.filesusr.com/ugd/5a834c_aa9ccc2cd88b48c6aa96185302ea6cb7.pdf?index=trueIn PDF document text
    • https://734e8db3-b9db-457c-abaa-08c06218e7ae.filesusr.com/ugd/f6bb82_98605bad00784e62a00bec327aff376e.pdf?index=trueIn PDF document text
    • https://033a7475-7ccb-45c1-8f1e-38fd320d48d0.filesusr.com/ugd/03a576_78be3e71a7cd4d1c95d42088037f9438.pdf?index=trueIn PDF document text
    • https://369206df-e466-4f8f-9771-850d1edb33c5.filesusr.com/ugd/8fd5dc_f8c11ed92ada4ba8a6e8572338f6a338.pdf?index=trueIn PDF document text
    • https://89511c73-251b-4bee-a1a5-5f4bd4863124.filesusr.com/ugd/f24cb8_9418593de5cf4cbd9757feee869ad040.pdf?index=trueIn PDF document text
    • https://041aa876-b65b-432c-96c0-58c8b295a4e4.filesusr.com/ugd/90d19e_610cdc9fd37e4045a35edfe2c9008c55.pdf?index=trueIn PDF document text
    • https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_e8536be6707048cab575ef562d350aa1.pdf?index=trueIn PDF document text
    • https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_a9f036cc9a364f518471c005bce80b82.pdf?index=trueIn PDF document text
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_fe95154f7d5f451a819c1c38ba9795fc.pdf?index=trueIn 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_off00010452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10452 5512 bytes
SHA-256: 09f6c72b7d262709f085073262b28d3b4f195812a0195277c9948ecda81b460a
font_01_sfnt_off00011706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11706 10648 bytes
SHA-256: 8c1eea6d79f587ffd153a26161fb1d9de1f681adcb4391e19734dc5daffff955