Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ac2ac9a88280d4…

MALICIOUS

PDF

68.2 KB Created: 2020-12-03 21:03:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a267af12b6b7654afd60222d1d5b05f8 SHA-1: d0a802c1494edd70918d988f3a5fb82e2dd03b41 SHA-256: 18ac2ac9a88280d46b5c77a059689aac7b76553d90fdca605c49969a75873933
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://traffnew.ru/123?utm_term=bread+slicing+guide+diy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374022/normal_5fbc385e42534.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473654/normal_5fb769d108022.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415045/normal_5fafb04464b89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5f8e2997702fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443624/normal_5fa084f454eee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424666/normal_5fbeea6c1fad3.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/475054a3-ae32-4709-9795-c27789320b7d/recommended_spark_plugs_for_2014_dodge_ram_1500_5.7_hemi.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/famous_people_that_kids_know.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08a7049d-08ca-4c19-b477-563d8bb30251/dalail_khayrat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/263076e7-84cc-4676-a9a4-f264f336b57e/zabojanufajozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2003d33-b84f-4773-b84a-c97979b63b01/dureroguxaxemovimopewa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb309ee3-20ba-46e8-9edc-ceabe133791b/ganij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22c01bb2-7cd4-4229-89c5-868ebcfeb289/47296182153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05eabf3e-645e-4335-b993-d140dff70116/jumaxaguwinelezozuku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96b72543-65f5-4ab1-91c0-701ff1365dcc/medical_terminology_worksheets.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_off0000d0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BB 5260 bytes
SHA-256: f7bb1901c234408ea96027922d839606f33dad6d029a3fa825e6e83aad722da3
font_01_sfnt_off0000e2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AD 9840 bytes
SHA-256: 936e135f4956ef152e01c63094c190560df2ef9b13ee5a64569d768de0b3ca95

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