Malicious PDF — malware analysis report

Static analysis result for SHA-256 572ef9eba3c7cdd1…

MALICIOUS

PDF

81.9 KB Created: 2021-05-20 02:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8bbf228ad5b9abf50be4ce2a9ba3ab7c SHA-1: 91cadb7ccba7a12cea25650837ad42ca2009fe0c SHA-256: 572ef9eba3c7cdd17867693cfda14d0a2eb32e342e8e0fa6e298e1d93378bb94
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, 'https://druttle.ru/strik?utm_term=120+dias+de+sodoma+pelicula+completa+en+espa%25C3%25B1ol+online', suggests a phishing or malware distribution lure, disguised as a search result for a movie. No scripts were extracted, but the PDF structure itself contains the malicious link.

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://druttle.ru/strik?utm_term=120+dias+de+sodoma+pelicula+completa+en+espa%25C3%25B1ol+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372373/normal_604f325c64090.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366048/normal_600142ae01f40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366620/normal_5ff5d0659da1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366324/normal_5fcf9bff283e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448094/normal_606529a95e5ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368471/normal_600bb28f3cd3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388626/normal_60596cb09df79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379846/normal_5fc7e94765f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375908/normal_606a5c55d78fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452618/normal_5ffccee10a654.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377095/normal_5fdd9516a541f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377933/normal_5ff681112f1ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477376/normal_6046b6b5e6952.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/8877760644.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/twisty_noodle_winter_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/trials_of_apollo_the_hidden_oracle.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/venijixomimagowujelavi.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/turuk.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/page_layout_design_inspiration.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/nojez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C6 5448 bytes
SHA-256: b47ad1946678e58e9cb515db053cf93b871956374895d19aa037861c79c5b9d0
font_01_sfnt_off000102eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102EB 11704 bytes
SHA-256: bc4474238be92c63844d1adc0ac36a626c3ec8728f0caac0157acae4a5284b48
font_02_sfnt_off000128f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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