Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f511c731b2e5d86…

MALICIOUS

PDF

74.2 KB Created: 2021-02-10 21:21:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: eba78692d2f62c79134cf97f12bac39a SHA-1: f6e31d4d1af879a6fb087714736d42fc52127e37 SHA-256: 9f511c731b2e5d8653ca1d1798a2770e0638e8e8309fd4bcb62a94c8fc652495
96 Risk Score

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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://baarspo.ru/aws?utm_term=net+framework+4+windows+7 PDF link annotation
    • https://cdn.sqhk.co/mezutowede/9iTGjdn/89192131561.pdfIn PDF document text
    • https://cdn.sqhk.co/besuduxikuvo/ji0gjub/kereb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477921/normal_6007bd4959ba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388158/normal_5fe8100553bb0.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/jd0ziaA/trial_xtreme_4_motor_bike_games.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/nuvukivaxiren/losinoligene.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/37937879287.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/the_informant_tv_series_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/26646829100.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/30115020729.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/18317697781.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/caravan_camping_bed_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/cilantro_avocado_dressing_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/accident_and_incident_reporting_procedures_hse.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/general_principles_of_cell_communication.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_off0000e15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15E 5316 bytes
SHA-256: c6dc948f3027dc95777f5805099b4ccbd4d1b1aa6b11a589155b63420e4b03d2
font_01_sfnt_off0000f387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF387 13660 bytes
SHA-256: ebbdff0e759e4150a54d794123da51aabf2bb155074bc4bbbfd8efe73149544d