Malicious PDF — malware analysis report

Static analysis result for SHA-256 c770e0cf88751ef2…

MALICIOUS

PDF

77.3 KB Created: 2021-02-19 09:31:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4827fa5ccd4a18c6a2663a632a96f1f8 SHA-1: 8f59230ad06d2440889fb5fcea89261e6a89494e SHA-256: c770e0cf88751ef2b9eee9f4cd52eb1abc5f4745637d6e9e2923da4bb07a7f8d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a malicious domain, disguised as a search result. This indicates a phishing attempt to trick the user into visiting a compromised site. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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://jottigo.ru/wix?keyword=big+birdie+golf+shirts PDF link annotation
    • http://reduslimitalia-official.site/dodge_ram_interior_parts_onliney63xx.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/hQQOLhc/road_death_statistics_uk_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/noxawuge/lDghfnO/ex_police_officer_killed_in_st_louis.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/ehjJqfk/english_to_swahili_translator_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/0icQgeF/robot_real_steel_full_movie.pdfIn PDF document text
    • http://usacreditmonitoring.info/giweluredepuxakokowakef9d5w.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
    • http://siboxep.epizy.com/kavegafukatipema.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/cauchy_riemann_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/poultry_farming_broilers.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/wutonuvogapexuwizevig.pdfIn PDF document text
    • http://tumirukilifu.rf.gd/rikimikavulanilos.pdfIn PDF document text
    • http://kozananagejeme.rf.gd/48124413077.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/khmer_calendar_2017.pdfIn PDF document text
    • http://gesonumakokobal.rf.gd/febrile_seizure_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/wedding_invitation_card_template_blank.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/75222064072.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/aplicativo_netflix_apk.pdfIn PDF document text
    • http://wexewowi.rf.gd/49592568919.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65B 4828 bytes
SHA-256: e1351efe4f6a49778f52e53886be77a6ce0b34bcaec67a1b4147f289ae7abd9f
font_01_sfnt_off0000f6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DC 10240 bytes
SHA-256: 4010a550b9d9bb7281e8388c123dcc9eb92d2c0153240e6eda6c772ec67ab9c5
font_02_sfnt_off000119e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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