Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a15095b7683b94…

MALICIOUS

PDF

72.4 KB Created: 2021-02-21 05:11:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 38852d0c532e0f40ec121c8494ae0ac2 SHA-1: 516ab21e25223e2d602a7bddaaeea4c620877bf2 SHA-256: 75a15095b7683b94e35c3f7b7627e9b50d7385b33bbb4802aaa40d81f0d57884
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 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://seumenha.ru/123?utm_term=how+to+repair+an+intermatic+timer PDF link annotation
    • http://discount50it.pro/quran_english_transliteration_bookasy07.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/djjhbgc/houston_weather_forecast_for_the_weekend.pdfIn PDF document text
    • http://mnogolidov.xyz/62212979959yqwuc.pdfIn PDF document text
    • https://cdn.sqhk.co/kawiwitifa/IpjeicY/77639756567.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/5tbfib9/hangout_app_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/gedodupem/fy2ibgh/jibuminav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496826/normal_5fe2701cd4109.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480898/normal_5fc861f10e700.pdfIn PDF document text
    • https://cdn.sqhk.co/bijowiroma/idUvehi/xibinilazixox.pdfIn PDF document text
    • http://ludshop.xyz/excursiones_cruceros_msc_opinionesory7l.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/kakef/windows_10_1903.pdfIn PDF document text
    • http://xelidamos.epizy.com/beach_buggy_blitz_apk_unlimited_money.pdfIn PDF document text
    • http://resifidivef.epizy.com/30486659363.pdfIn PDF document text
    • http://betizig.epizy.com/55550917300.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE85 4924 bytes
SHA-256: fe7520b59df13114d30b228e7518174465255c0280789afa975b5c7ef7a02f13
font_01_sfnt_off0000ef3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF3C 11032 bytes
SHA-256: 12fd0e4ed0b9e29b6ba663346a2bd75849918aff31dbeeb4469ce1ba09b143af

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