Malicious PDF — malware analysis report

Static analysis result for SHA-256 b424f8d1ca0995f2…

MALICIOUS

PDF

83.6 KB Created: 2020-11-26 16:17:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 42c13734046ace7bedfed7f11481d792 SHA-1: 4f65cd839cbc6d40fd6dd6b59f63cb0422f0b71a SHA-256: b424f8d1ca0995f2caeb7e0a25fa7083ec352dd619daf1cde06524f8574d2da2
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 0.9996

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://trafffe.ru/strik?utm_term=twitter+sentiment+analysis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443588/normal_5fb5b0db51d63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445107/normal_5fb7246dc1610.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380413/normal_5f90bceb67516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_5f8d0af423927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377647/normal_5f941e97c67e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xenavuxa/5992562274.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/132b0697-c1a1-4e1c-8ad3-9f82ea9a2fff/in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/delomoxogujaku.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/everest_1996_anatoli_boukreev.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/phonics_test_for_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba20f0d9-79d2-4215-9431-b49802e4e546/heavy_duty_iphone_4_case.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/89013367603.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/33406660633.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/sentence_or_fragment_worksheet_grade_4.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB16 5600 bytes
SHA-256: 1a3ade8967eea97c8ce93d23db43697623cf4ffe547cbbd41b5fdf65722403e6
font_01_sfnt_off0000fe84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE84 4652 bytes
SHA-256: afecbc143bd907dba3ee9ea89dcc0199780011e73d5be6b4cfc38b3781937cf5
font_02_sfnt_off00010e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E35 10880 bytes
SHA-256: ecda3506eea0c14eb1cfc38ee0d032e660822c156ad6ea8e43489892d4c8546d
font_03_sfnt_off00013363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13363 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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