Malicious PDF — malware analysis report

Static analysis result for SHA-256 c53c99e24fde12ae…

MALICIOUS

PDF

78.3 KB Created: 2021-05-20 15:09:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b918dee9e1097a0176c19a2f67b6eaa2 SHA-1: df1b6e08ac391b494bf25abc9ba401203778be39 SHA-256: c53c99e24fde12aeef2a53755e7c3c6a23569b2c28f6803b617273da6c4c30bb
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-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://nipisod.ru/strik?utm_term=qual+%25C3%25A9+o+livro+mais+vendido+do+mundo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365998/normal_601bb5b18a65a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_601df4a144af1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492257/normal_6047b4d16c659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407983/normal_601b74f7cddb0.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/06d1dca5-90e3-49c1-879b-068b41641c3d/23830488917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66512822-433f-4525-99bd-dd358ae69693/ketiwopujewagedujukowidi.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/how_to_make_the_best_cauliflower_pizza_crust.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/53613348949.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/bigfoot_app_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/gta_vice_city_cheats_apk_android.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/pdf_architect_4_creator_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/sojofobuzijometatipaduzij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb884b99-3bd8-4208-9089-787bfd8dc709/xaxijukivekokukomagumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8edb1d-d533-419b-b112-01c209ef82db/sinezeruvosunapajadaba.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/wepurupivitozasarodigov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28da2901-357d-49fb-98ed-d02834e80230/47908152937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5694ab26-d5d2-4eb8-a799-b4c3cb12e7f0/ross_carbonite_ndi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3565f764-7fd0-46cf-9ce5-d78e7f562173/zagiluzikukozumanodoxaziz.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 2

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_off0000f0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B6 5236 bytes
SHA-256: 000a99d777f5eae6e1b24ed7f7b782fc07f3d06106da75742df373f7ba6c1735
font_01_sfnt_off0001022b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022B 12936 bytes
SHA-256: 1eb4f81c4d0f26bdbacb16db497d8b1f03d880b2d7e992e36770ec27308ad4b8

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