Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb03a1291b04d92…

MALICIOUS

PDF

65.4 KB Created: 2020-12-10 22:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 04c705c0a49dab31562610e2fa5bb03f SHA-1: 95ad11b2749ca10877fc6a8094c9e1939f7fb9eb SHA-256: 1fb03a1291b04d921ab5815eed41d255f6ba3d95e7f2d362e77952332535e559
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 0.9998

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://trafftec.ru/strik?utm_term=types+of+solids+worksheet+answers PDF link annotation
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/mamegazopubu_rovurubazupe_nelidulukogetux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459629/normal_5fa65ee2c7d51.pdfIn PDF document text
    • https://pewoxunoxosizix.weebly.com/uploads/1/3/4/3/134318290/e876c1ecffb.pdfIn PDF document text
    • https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/9342940.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfd38b7a66e04eaf50367/1606221121447/split_full_movie_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/845c95ef-801a-4451-a690-1bdedf9b3540/de_broglie_equation_units.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/zetinitikuxejirafidavexuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0e3e12b-cfc3-46f4-af24-fa73e8b972cd/88318424968.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc704532122570d58ffb8d8/t/5fd01b6b6cbf29106bf03e7e/1607474030478/kaiser_fontana_covid_testing_appointment.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/business_man_2012_full_movie_telugu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d95bbdb33045eee4110e/t/5fc7bb8c8f07963615857a64/1606925196795/ropesatigelegota.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_off0000c208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC208 5336 bytes
SHA-256: 409636b6b04b8c63085af615938316bfa67a4b6c55bac07330433d6488b565cb
font_01_sfnt_off0000d43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43F 10860 bytes
SHA-256: 3881389ad436e3683027da18bdbbeab82147248b618562fce98bd7070c7bac4d