Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2c75c6eff22698…

MALICIOUS

PDF

205.3 KB Created: 2021-03-23 11:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfbd6a66b20622962e1912932f669880 SHA-1: 7f6891e8184281a78d3cd61853c05f1bec81a300 SHA-256: bc2c75c6eff22698591adcac91292e199a6d308577e094d72c60535a2682b0c7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'subliminal messages in music'. No scripts were extracted, but the presence of external URIs and the overall malicious verdict strongly indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://jacksth.ru/wix?keyword=mensajes+subliminales+en+la+musica
    • https://cdn.sqhk.co/jotenitix/ageuvjb/ferivojuwoxaden.pdf
    • https://puxedeva.weebly.com/uploads/1/3/4/7/134730870/9740195.pdf
    • https://cdn.sqhk.co/jebuxanit/hchbJrJ/molubofutupo.pdf
    • https://bitoranajezope.weebly.com/uploads/1/3/1/4/131453137/tomosidowemusukenex.pdf
    • https://gaxifuxizuru.weebly.com/uploads/1/3/0/7/130739475/fulejix.pdf
    • https://cdn-cms.f-static.net/uploads/4448549/normal_60551f3f56291.pdf
    • https://cdn-cms.f-static.net/uploads/4425506/normal_605533cdbc6a9.pdf
    • https://cdn-cms.f-static.net/uploads/4463551/normal_603af4ab28fcb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rokuwapesu/parorapasobubasisevivaz.pdf
    • https://s3.amazonaws.com/matogapibelifiv/sibulebogesimalerej.pdf
    • https://uploads.strikinglycdn.com/files/e0808453-e88c-4aa3-9bd3-efb45bf8950e/27471440310.pdf
    • https://s3.amazonaws.com/tezofuretejom/does_walmart_have_union_workers.pdf
    • https://s3.amazonaws.com/jixeremipet/hispanic_heritage_month_worksheets.pdf
    • https://s3.amazonaws.com/pugomonapoxuxe/teleperformance_work_at_home_careers.pdf
    • https://s3.amazonaws.com/lemefofutomapox/petg_plastic_sheet_properties.pdf
    • https://s3.amazonaws.com/tazibabebamep/84275748910.pdf
    • https://s3.amazonaws.com/zedudo/avery_design_and_print_uk.pdf
    • https://uploads.strikinglycdn.com/files/725abd37-5149-4101-ac8a-35135654ef70/fitunofizopo.pdf
    • https://s3.amazonaws.com/luborinizu/71344437380.pdf
    • https://uploads.strikinglycdn.com/files/dd02fa2a-9d19-47e3-b8aa-6675142a8490/sixekiritiw.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002e0a0.bin
5fdaacbd13bbbacd747bade7915d64ad2710a68f479c8cc7c8c6d16a3bbfa68b
pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0A0 5068 bytes
font_01_sfnt_off0002f1de.bin
76b407c4c198974e5d7c1b637c20a3b4639bd638afde1214ce935d94e2854c52
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1DE 16136 bytes