Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbf8229e43a60f1…

MALICIOUS

PDF

69.5 KB Created: 2020-12-04 16:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 1a078327aedb18eba74202c84bb3dfa4 SHA-1: d77d807c06e0a479864e1af5e2221963677de8f5 SHA-256: 3dbf8229e43a60f1a436db5e810c80eb04ad01c89ca8c3af16a45e8999f898db
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://traffnew.ru/strik?utm_term=how+to+write+piano+accompaniment PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427091/normal_5fa5008b56241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f889fa094565.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393508/normal_5f9c8a459a98d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/towakog/kefenutubu.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/cauda_equina_syndrome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cda7c161-6770-48b3-9d3a-1ebb013d8808/play_services_apk_download_android_4.4.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/air_pollution_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/buramixav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8edc6f46-e90b-4e54-ad20-2950083038b5/jisusabegowelodun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5f1f6b5-c82f-4f79-b483-f6990cd17e78/insignia_ns_rc4na_17_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/date_format_anglais_publipostage.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B0 4924 bytes
SHA-256: ac60c9f816e8859f63b9b714139645047d10f1fd1f058ddffcef566a52f6fcdb
font_01_sfnt_off0000d75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75F 6068 bytes
SHA-256: 58b4873d33ac9fffaf45ed1a2312b8eb5fadf3b067e77f8cfe9e87095f6a7717
font_02_sfnt_off0000e710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE710 10028 bytes
SHA-256: eecc7cc87043e0edef284fa4a61a27eb950a0a4a7475fd885dcdabbfccc8cbc6