Malicious PDF — malware analysis report

Static analysis result for SHA-256 06989059686a042c…

MALICIOUS

PDF

79.0 KB Created: 2021-05-19 00:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 16d17f8369766d2afbdc0ee9101d0a97 SHA-1: 3e82d763d3ec76efede0724db8c4183753ed717b SHA-256: 06989059686a042c937af38e1fd14a5a522b48a9183093d140d78ce6d402d000
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a suspicious domain, likely intended to host phishing content or a further payload. The document body, though heavily obfuscated, suggests a lure related to Microsoft Word functionality, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/strik?utm_term=como+fazer+uma+linha+no+word+2010 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447253/normal_5fcb956f2feb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401972/normal_602c75e66df74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409998/normal_606ac43d32bb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_604dd7e132ae9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463263/normal_60512aebc411d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410201/normal_603132fbf41e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478127/normal_5fc968123edf4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390092/normal_5ff14a8781268.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426422/normal_6027d6e5440fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407552/normal_6008fb2b38642.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415322/normal_6026b43aa5e70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423166/normal_5fc5e689794c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467955/normal_603500bfd8d99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479474/normal_60220be45c2fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470683/normal_6052f602d1cf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478123/normal_602c6ccf78236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393485/normal_5fff77a782afa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504047/normal_5fdb9e2c8614d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495043/normal_5fc7eecd0a2c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491412/normal_6046ebbd35fce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468871/normal_5fec9b4175a37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410694/normal_605c28ca839a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_602cdf02dd7f6.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
    • 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_off0000e626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE626 5264 bytes
SHA-256: 72b34f4a8b46c6acd1bb2592d47e1d2565566be71d0ad242d732633b859c3b84
font_01_sfnt_off0000f7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EF 12416 bytes
SHA-256: 5bafdce720e8de2254337587ee2e7c99db8b9a897bec994c7d39e0277defb6f1
font_02_sfnt_off00011e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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