Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc45871734144af…

MALICIOUS

PDF

67.0 KB Created: 2020-12-10 18:25:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0e7bdb12848089b5e232d63fa8fc34c3 SHA-1: d958fec5019c5f917d2a64aab92b5d608f21f63b SHA-256: 1cc45871734144af03082b4ca07aed775380f31e94ca6339538991a82afe1dc6
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://traffking.ru/strik?utm_term=chapter+8+solutions+acids+and+bases+test+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393036/normal_5f9d3b6242f6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f87549f37854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378170/normal_5fbf0e04571d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393508/normal_5fa04085215d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375889/normal_5f91bb2a72a8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387573/normal_5f9d0729ec3dc.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/5fc0f0de5bcb0228a282afe8/t/5fc66571eaf37e3b647729f4/1606837617864/82135806699.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0e8564a3cc4058a6dd7b/1606225542222/22535080379.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67aea084698658e84b086/t/5fce098183d2ac65cc398933/1607338370307/new_whatsapp_status_wallpaper_download_hd.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3746f239b072291417dd8/t/5fcfc4a65e198d16f19daebc/1607451814731/toolboxes_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/monster_bluetooth_fm_transmitter_instructions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc01ccfc14dfd36feed28e9/t/5fc14623e18c5c478e2b05b2/1606501924067/94099472551.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_off0000c6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E6 5492 bytes
SHA-256: fbfaf4a0f829e2eeaf39aad99ec98ce6413b49eef5d351ec82ac95ce31b9ebda
font_01_sfnt_off0000d98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD98B 11056 bytes
SHA-256: 44728debc9008cec7ff87c97248e5a83181fff0a1615fd68ee621300b347e0c1