Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4a298ba9417310…

MALICIOUS

PDF

75.2 KB Created: 2020-11-26 00:21:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2f7a737e3acf74ddf3a155f58354bc28 SHA-1: 987f4b8d9226151c9d8d31bb2a1719eac3a068e0 SHA-256: 1c4a298ba94173105f45d63da8143a8826bc9a9a5ae63f517b834879cb81b89a
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=avast+secureline+vpn+activation+code+mac In PDF document text
    • https://cdn-cms.f-static.net/uploads/4403264/normal_5f9758905b30c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_5fb412d9b42fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470836/normal_5fa6474e089f5.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/e2a65ab0-97eb-43a4-8b35-570a630cdfdd/rafejesekogowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aa76421-093a-4371-a5b3-b61d385e39a4/nuviritezigegofimidojipeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d01ffb-8ede-4b9e-8ebe-006c83cf781f/42193956978.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26be721b-359c-4499-9681-f11f0c66d57e/blender_animation_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5091d880-391e-4d44-ba3a-82ff920c300e/risakatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c5748e0-9e42-4744-8fab-5f9108ab2d97/78871951385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c588213-64ad-4cb9-b78c-0d08b21c485a/zubunudegujunokav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a753a3c8-e444-47f2-8dc1-d82fd185ec29/31440561685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993723b3-32a5-4986-b791-90d0bf3ba1fc/sabinisuwagivarazibedemim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/001169b1-afe8-4932-bd12-dfc8ed1cd5f5/turkish_empires_rise_in_anatolia_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374ab840-4ab5-42fa-a2b9-700c13be5e5b/41732823058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abafc891-4132-41c2-b71f-3f132c8f7b99/gamezixiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e1f624a-958b-4b08-8e4c-5199941f1263/walworth_animal_hospital_phone_number.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A4 5268 bytes
SHA-256: 53738d25fc459d2ec403f69b3fa963e2353f00f1f2bc1c40e6e2f655c31f051a
font_01_sfnt_off0000e67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67C 10344 bytes
SHA-256: 3a99863d7b3aa1176c101229e3a73d853795acf94d0a82a8a75011e4a2168944
font_02_sfnt_off000109ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EF 16232 bytes
SHA-256: c72bbc794f198a070771b09ae1932fab843329bfaa0f28b06f4c0622f6fc6d58

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