Malicious PDF — malware analysis report

Static analysis result for SHA-256 32075c59623699f1…

MALICIOUS

PDF

80.7 KB Created: 2021-05-25 07:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 495a9d3216113a1ef7c3879a6b43b98e SHA-1: 5792f4fe2c40ad4a3898f0472664ecefa8ea5e7f SHA-256: 32075c59623699f1fc45f88210c8d7748e9156632361adb37d0e1d69d3926a2d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=taking+cara+babies+newborn+class PDF link annotation
    • https://situtewazugigev.weebly.com/uploads/1/3/4/2/134265876/zudavejevibekep.pdfIn PDF document text
    • https://setixifofu.weebly.com/uploads/1/3/1/6/131606861/zogapunelad_gexep_nozivopiziwafe_xirowivifa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_6047ef391c90d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368996/normal_5ff9e239c858f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_604d2023913ea.pdfIn PDF document text
    • https://jasuxazej.weebly.com/uploads/1/3/4/8/134875243/koripixo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_60361ec72dda9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5fe9fc7fd120a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455657/normal_5fe84c6f96ef0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401517/normal_60126cf04c88b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408707/normal_60675b3646191.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://uploads.strikinglycdn.com/files/c8a2ab94-658a-4d2b-8e7d-e56aaa5bb4cc/how_to_repair_a_submersible_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/73256144430.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/zulfiqar_bengali_movie_song.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/48539238640.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/pugireki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21ca419c-85a2-4da4-9013-84703cd05cd4/gotidawesetisopexos.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/bilindar_kannada_movie_video_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/37150419280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd60a545-2625-4c63-bebe-6950dccfbaa7/what_do_psychoanalytic_theories_have_in_common.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/3-4_year_old_developmental_milestones_uk.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_off0000ecbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBC 4920 bytes
SHA-256: 0c85080133023ccb071afe281fdb992e5604b74328abe58a5c3025e5a1be7247
font_01_sfnt_off0000fd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD86 12380 bytes
SHA-256: a11d776a824c1c90572e384b68fb9cc2f9e4f57ebfd420806b1141ff40b084e1
font_02_sfnt_off00012570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12570 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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