Malicious PDF — malware analysis report

Static analysis result for SHA-256 f28fd7c8e2e89b44…

MALICIOUS

PDF

61.0 KB Created: 2020-12-22 03:07:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3c5342004dfe2eeba71aa011570cfbe4 SHA-1: de05f2bd9a7f51c5baa97932da50dbd257181923 SHA-256: f28fd7c8e2e89b44edea4b743c20ca11b28ba6dbe5b4d7240c0bd6c44be77ddd
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 0.9996

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://traffking.ru/aws?utm_term=very+sad+shayari+image+hd PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/12c76122-8b16-4f58-b68f-99067a3cd492/sitopamemaruvatog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b66aa277-b06f-4165-bc77-5142f8a852cf/10949512815.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/tencent_game_english_version.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/balance_sheet_analysis_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/59359156520.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe006135b7bc96605614f88/t/5fe0abfff23a830a59e1d9b3/1608559619198/math_addition_sheets_for_first_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/febigosokomapuk.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/40912363179.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/2020_monthly_calendar_template_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb02c3b-9d9e-4afe-9467-c1bdd9e2242a/cassandra_the_definitive_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/sira_atex_certificate.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd37885b7bc966055e0d98/t/5fdd71f15809ae3434e6bb32/1608348146588/89132921652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74f7b074-fe38-4026-a378-0eb90a10cd49/haynes_small_engine_manual.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_off0000b523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB523 5276 bytes
SHA-256: d0612b4ed9dbb9d6cced84dccb13b4ac425db77d313e97db6a42fcd24541a361
font_01_sfnt_off0000c6f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F5 9480 bytes
SHA-256: 61cfcb52f1b0136b8e3f576bb03bec4691c685e2017947289a732b5cff410694