Malicious PDF — malware analysis report

Static analysis result for SHA-256 791768006fb4df81…

MALICIOUS

PDF

69.2 KB Created: 2020-11-16 22:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 78fa31ad9d872d20812a96f616e21f77 SHA-1: 9583dbef9b916a0e3871163661739f1ec3ff3186 SHA-256: 791768006fb4df810f767961baba1996f0b68b6f67e7afb72af61a034cbb13e0
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-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://trafficel.ru/123?utm_term=red+wine+mushroom+sauce+for+pork PDF link annotation
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/suvatonilud-dunevex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f9bfee65e89c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5f99eb486c297.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_5faa061e570bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371514/normal_5f9459ba1cc22.pdfIn PDF document text
    • https://zifuxiwow.weebly.com/uploads/1/3/3/9/133997311/vimobud.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/5346b10051a.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/341db655-e6c7-4795-9305-f39797a8cd53/el_diablo_menu_missoula.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/kelly_middle_school_dc.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/73813932706.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/at_play_in_the_fields_of_the_lord_quote.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_off0000c46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46B 5328 bytes
SHA-256: fc4a10120a873bbfbc3f4f6588488f8fef9b4552f343e65d44c215800a833644
font_01_sfnt_off0000d65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65F 10348 bytes
SHA-256: 4e3af0ad5e26456e8a21c505ac5d532020b8684edcbd184cbf4c532edaf1b422
font_02_sfnt_off0000f98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF98C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34