Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac354f4130127a9a…

MALICIOUS

PDF

77.8 KB Created: 2021-03-14 03:54:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4724a80166c2f6e198c7badcf673c73e SHA-1: 56bc90b4860a9fb7566f381d45ae9d79d369212f SHA-256: ac354f4130127a9a31eea1a44562a36caaff00357d5d5f8c7b8d03ae1c92d9a9
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 0.9991

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://fokemale.ru/strik?utm_term=lean+management+healthcare+certification PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492246/normal_601d14b3bd7ae.pdfIn PDF document text
    • https://ridulimozujigo.weebly.com/uploads/1/3/4/1/134109280/148db3cda7135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_603b000a9c9ba.pdfIn PDF document text
    • https://zotawirimatoxo.weebly.com/uploads/1/3/4/0/134096886/vupofiro_nopomip_pilemonis_zirizokatopoj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476947/normal_5fc7d9f3beef7.pdfIn PDF document text
    • https://jevemiparo.weebly.com/uploads/1/3/4/5/134501543/e75defdd7b408.pdfIn PDF document text
    • https://jorojesa.weebly.com/uploads/1/3/4/8/134861508/jetezanojugo_dexuturaboxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402944/normal_6027997555e1f.pdfIn PDF document text
    • https://xamifixi.weebly.com/uploads/1/3/1/8/131871938/6259655.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384301/normal_5fdf31f170d91.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/morning_evening_adhkar.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/class_12_biology_important_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/osmosis_potato_experiment_worksheet.pdfIn PDF document text
    • http://zotubune.myartsonline.com/fallout_4_modify_companion_affinity.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/garage_door_size_guide.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/38118456397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0104d7e-3e74-4600-9aba-0640d0d2fbf3/57746910835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2df26cb3-20e8-4b0c-97e1-d6ab84e9d6a5/84305321117.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/antony_and_cleopatra_critical_essays.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/what_is_canonical_form_and_standard_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/armenia_travel_guide_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/566ab306-9d5f-448f-b033-3326e8c9e358/how_to_write_a_novel_introduction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cd5fafe-c93c-4b5f-a630-1a1aaa5b9141/13420158523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b98377be-eed6-4058-a6d7-409757762f4e/excel_formula_not_working_in_pivot_table.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_off0000f059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF059 5060 bytes
SHA-256: 352a4666244905e7fb604a2a5c0a9b0535292e60456821e9f8fd1b9120de4c0c
font_01_sfnt_off0001016e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016E 11872 bytes
SHA-256: 03ec3857a318ad2ecb57b166eedd85f297b8771156c0a838852d0a6322d1e23e

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