Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f9feffd506f8e9…

MALICIOUS

PDF

80.6 KB Created: 2021-03-19 00:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87b71512cf350550925ef546af49e5ab SHA-1: dad273a55d75bc40986321957d40dd41107ca35a SHA-256: 88f9feffd506f8e959e27b6691b3baabb52ccf301cdb586908ba2dc8d11edc1d
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, contains text related to a 'Britax marathon car seat', suggesting a lure to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=britax+marathon+car+seat+rear+facing
    • https://cdn-cms.f-static.net/uploads/4383577/normal_604d7795b918b.pdf
    • https://cdn.sqhk.co/wuvexudid/zOgfhdm/smart_charger_iphone_8.pdf
    • https://cdn.sqhk.co/fapolokid/gWhbjaW/identity_v_characters_height_hunter.pdf
    • https://static.s123-cdn-static.com/uploads/4421049/normal_5fe068b0a212c.pdf
    • https://cdn.sqhk.co/rajunakeb/jgfuibe/mofolebubujodomubomugop.pdf
    • https://cdn.sqhk.co/wobuwozavenu/wsz5gfb/ten_facts_about_saturn_the_planet.pdf
    • https://cdn-cms.f-static.net/uploads/4487208/normal_603d04686e651.pdf
    • https://static.s123-cdn-static.com/uploads/4368474/normal_5fdd49b0276ff.pdf
    • https://cdn.sqhk.co/mixaluwekitu/hjcijib/hotel_maintenance_schedule_template.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/99a6478a-00cc-4faf-9151-ab35efcc584a/96809646210.pdf
    • http://sitasuwa.epizy.com/jubalukulewufudoxeregari.pdf
    • https://uploads.strikinglycdn.com/files/558f5a1c-65e6-4b3b-9166-5d8c12466adf/nararalogewigabubunimum.pdf
    • http://fepadegan.epizy.com/liwebopotobibimed.pdf
    • https://uploads.strikinglycdn.com/files/578f3b43-bb16-468f-b03e-3ec2f4609c5e/what_genre_is_sense_and_sensibility.pdf
    • https://uploads.strikinglycdn.com/files/7e59cc43-f843-4f15-8887-3fbe14089152/jeguwofurob.pdf
    • https://uploads.strikinglycdn.com/files/43821887-c87f-4347-833a-6d8e568dc847/xepumerijopebefiwe.pdf
    • http://zitegarapopufis.rf.gd/dosamirivejilixebugujivo.pdf
    • https://uploads.strikinglycdn.com/files/534d3815-66c9-49b8-92ff-46fc8ea94982/refesatuwapegov.pdf
    • http://zanukabijegur.rf.gd/carpet_cleaning_proposal_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f123.bin
34d39f49b4404ba89b1ea8d56909874a620cccb9bd81136753f85137b0520595		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF123 3440 bytes
font_01_sfnt_off0000fd70.bin
5873c176a60035c3d157b3a0f1157fda990b50b42879032380db2243bc42c554		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD70 5380 bytes
font_02_sfnt_off00010f9f.bin
90bec34dc30688aabd89e9e7345d99c9a1b3777665c94b51e733def0b24d9917		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9F 10968 bytes

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