Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42ab2cc074dd23f…

MALICIOUS

PDF

107.8 KB Created: 2021-02-20 14:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 380c2ee3955d5e5f9987c08e8e949e63 SHA-1: 95e8d2bc09da7cf004cd9300b7d04e72beb8c3a0 SHA-256: e42ab2cc074dd23f96e3aac6ebe37f15d6f1182291600c9628dca5e121b2c9b7
96 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 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/123?utm_term=hegelian+dialectic+theory PDF link annotation
    • https://cdn.sqhk.co/kowaziwaso/iaQgic6/download_blood_and_glory_mod_apk_android_1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474231/normal_60134a5255e55.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410211/normal_5fe1750a8f885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502819/normal_6018056818018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499023/normal_600d6b146d3ee.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/myYvWge/acg_number_coloring_pages.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/jKjgOia/29194696213.pdfIn PDF document text
    • https://cdn.sqhk.co/gogerazina/gTRHmdg/badalaludivuxoweru.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/aigW7ij/xuwekox.pdfIn PDF document text
    • https://cdn.sqhk.co/pibexezases/Xb8Ldhg/69279266616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406166/normal_60191b2031023.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389586/normal_600f1ef0d6e8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380214/normal_60051241207cc.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/wanasuvedigo/limited_edition_print_certificate_of_authenticity_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/android_apps_that_pay_you_real_money.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/accp_chest_guidelines_vte_prophylaxis.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/31455468237.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/14095652690.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/notipi.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_off000163cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163CF 5088 bytes
SHA-256: 68019dbdbfadc41441bb7bce65f4a89df9e3d0d4a0214da5af795ab4b433c5a4
font_01_sfnt_off0001751c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1751C 14532 bytes
SHA-256: 8c40bc19ed264db276607ea241a2aad347377ee33589cdab99d4c13753b455e7

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