Malicious PDF — malware analysis report

Static analysis result for SHA-256 37f3f83d351ad919…

MALICIOUS

PDF

79.3 KB Created: 2021-05-14 15:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f9ede12499e7a196e14c0238a43ce155 SHA-1: a9dddbf4f349f8ec7e4d83846b8b0acc963f941c SHA-256: 37f3f83d351ad919a5fa1ceb090e6b3d2c179b8e3a3991e4e5bc50e7d457ba24
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 0.9992

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://dugedepap.ru/strik?utm_term=art+in+the+age+of+mechanical+reproduction+philadelphia PDF link annotation
    • http://rowowesofazov.medianewsonline.com/basic_physics_problems.pdfIn PDF document text
    • https://cdn.sqhk.co/nusatabi/iahaqjg/pacer_pedometer_walking_running_step_challenges.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/agjaheJ/tiktok_mashup_1_hour_clean_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxamomajil/tUBjdic/44104527563.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401696/normal_60206301b206e.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/hjghjib/sms_forwarding_app_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465277/normal_60418f5227693.pdfIn PDF document text
    • http://rijunoje.mygamesonline.org/afcat_2_2020_syllabus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_602599f7bfb4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467560/normal_605d6df13105c.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/47a5e5cf-2267-45bf-b214-99ba5974a0af/dr_dre_beats_commercial_song_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/69800557157.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/bofibubasugili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e37c4cf-4c24-4979-9bcf-b823b60f7e0a/pdf_oxford_dictionary_english_to_urdu.pdfIn PDF document text
    • https://d427386d-3434-45d9-8802-370857a594f4.filesusr.com/ugd/accd1f_ad1df6721abf4d3fa2f1e0c6a0b66588.pdf?index=trueIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/pemudofuvelopejug.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/vavutonisogupozowif.pdfIn PDF document text
    • http://wobadumiravolu.atwebpages.com/mobujajebenejop.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/osrs_ironman_1-_99_construction_guide.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/ximiketokifofojanunus.pdfIn PDF document text
    • https://abbf68a8-5b21-4996-91be-11266bd273ed.filesusr.com/ugd/9374a7_99779d57d19d423ba9a273c70db22b66.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb80ad9-ea7f-409d-af9d-72d21bca519e/a_world_of_ideas_machiavelli_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/vesikadababerukelufen.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64B 5380 bytes
SHA-256: c9e50d00ff2c39fa6e9e9a76cdc0ed8495a877aec9cdc31b06eb9a0d81c0aa78
font_01_sfnt_off00010873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10873 11412 bytes
SHA-256: cee660317bfb32cfe8da12c743bf0b452d9611b57763adfc99cbb8ca1ff5eb1d

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