Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3268c0bc9b9b5ff…

MALICIOUS

PDF

69.5 KB Created: 2020-11-20 22:10:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 76e67cc1c909232c4b2a015f9f6745d1 SHA-1: 1254353dfd4a39000aec184f23603b01197a5061 SHA-256: c3268c0bc9b9b5ff8820c983a3ae5c7ca633da96e5fd07100095224b05513545
96 Risk Score

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 0.9997

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://trafffi.ru/123?utm_term=toastmaster+grammarian+word+of+the+day+examples PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/60cd7092-b17a-4c27-8620-215d60573937/diseo_de_instalaciones_hidraulicas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f3f8e4b-bae5-49a4-a224-ea009fb50919/85757101547.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/active_directory_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b021e76-3d44-4458-952c-f6d82dcd90a6/mopajuga.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/remote_control_sailboat_for_pool.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/driver_license_number_generator_elf.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/love_nikki_cheats_no_survey.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/zixenebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c5fa611-e6f2-4b4e-b712-2c70f4c85bb1/72775166328.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/69713196240.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/854546a3-f968-4a09-aff6-97e96390a920/sfm_urban_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzumeb/jewurusexub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6865c9eb-3a48-4d89-9be2-0b87c463dee9/vezegan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8f32e47-c6b3-493e-90a8-1220b923accb/umbra_otto_soap_dispenser_manual.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_off0000d0d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D1 5664 bytes
SHA-256: 00aa69098ddb33ed64cd003465b5daabf00172a7b96abb861b9a6a13930d3292
font_01_sfnt_off0000e407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE407 10920 bytes
SHA-256: ba26d7e5ee1cb5cf76867db5a5457d06e6442585eaf09907ec5f2c229e05030e