Malicious PDF — malware analysis report

Static analysis result for SHA-256 2200a0dfe33d0f70…

MALICIOUS

PDF

90.8 KB Created: 2020-12-05 05:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3cef167a0611f19fcf582e665f0cdd83 SHA-1: 9dc426c2db2ce9a1e4f2bc786abd9903896a8c58 SHA-256: 2200a0dfe33d0f707297224aa68b3734664402ad52ac95230da6c33605aff297
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://trafffe.ru/123?utm_term=knockin+on+heavens+door+chords+uke PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f87148cd4bbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471238/normal_5fba68f448299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369518/normal_5fbe27960d8c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472753/normal_5fb88264f3774.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fabfa9424f89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bada3d43-72d1-4c74-a9bb-ea0cd8a046bc/soda_brand_shoes_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0873a11f6a4198483d0f6/t/5fc12d111972c46e3cc8b530/1606495510970/95234680160.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d2deea4a794d56670281/t/5fcae209551bdc47e79d4dde/1607131659098/pusikubojul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/609612ee-3055-47c8-a079-895c66d5acbc/economics_chapter_4_section_3_quiz_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6898dd37-7983-486b-afd1-81b79dfd4954/rukaxabunezotoduba.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17741e5c7695ca99fa7a5/t/5fc8e3374b97230d0517e5e8/1607000889037/power_music_workout.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67134a5bc066edfcb9abb/t/5fc7442ec7c45a5eafa33512/1606894638952/psx_4_droid_apk_free_download.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_off00012779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12779 5088 bytes
SHA-256: 9de98d9d6616f1340255f19277711e672483eb3798ad629f3cef74f1472df2ef
font_01_sfnt_off000138c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138C6 11068 bytes
SHA-256: cb4356b4285958e68f8bb9f1b4ecc4ccc0a34f2e4948759cf1da2a0f98b32bc2