Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace135b46f27565e…

MALICIOUS

PDF

83.1 KB Created: 2021-04-05 19:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1e2b8146ab1156060ed67e06cdd769fc SHA-1: de8453e2ab22ec678272232856324b99a1df6da4 SHA-256: ace135b46f27565e6511e4fd4c38f03aea36789cf334f7bcc9ce83ac792e4003
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 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=z+score+word+problems+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385413/normal_600ce8b57a06b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456389/normal_6004eeece4be0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487191/normal_6041c13faec7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444649/normal_5ff07b0a5d893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_604ed2d689108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444357/normal_602ada7178c24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_605a9a5be5f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402478/normal_604d009441ecb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477913/normal_5ff4df42b6ad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_60484db018bf5.pdfIn PDF document text
    • http://jukojadijomefar.medianewsonline.com/secured_to_jpg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383582/normal_6016c3d3e5ec6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee5384ca-349d-4e2d-8299-3dd27d08e30c/478524175.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/caste_category_list_in_karnataka_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f64d0f3-cc9f-478e-ae0c-8a86a559f523/what_is_the_magnitude_of_a_resultant_force.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df4720b-a4fe-4e75-9ab5-b54fe4d13732/sakatovisojadusofenidik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/560310d0-7e1e-4473-8263-bea929c42914/what_is_the_ec_short_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8072f71a-bb1e-4cc8-95bc-e4e794770921/rugaputuzebumawopaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f33ca8c-0952-4048-93a7-202c0bf72b0e/what_are_the_different_types_of_health_information_systems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee0ed79-c656-40b0-950d-4bf1692d6dd2/does_papa_johns_have_wheat_crust.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/213c9359-da93-4210-ab28-5f59bc8e63a4/pozurotokomefobolujor.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10680 5440 bytes
SHA-256: 57464848430d7de873f1c2d549e5fccf27ebb681dacf8c45cf10b3b952c78f9c
font_01_sfnt_off000118ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118EA 11152 bytes
SHA-256: a3ceea8887b2896249e63c9b0424c5d8646df613beaefed1b8d510635f1fae42

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