Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70111f68e06f4bb…

MALICIOUS

PDF

80.2 KB Created: 2021-02-20 13:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cda9cc4f4ab41eaced890d9d07c3261b SHA-1: bfced4b9321c2847b04210c472addb270bb4d64a SHA-256: b70111f68e06f4bb75988e4a6d211c2fcdb8a4399d20aafee4c10495b891857a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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-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://jacksth.ru/strik?utm_term=what+are+the+types+of+marriage+in+sociology PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413707/normal_602c8d7031e04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452385/normal_5ff712b700403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419827/normal_60240b1ea9b0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410703/normal_6000ac829503b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5fd2bfd184eb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462036/normal_601c61160e3c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407086/normal_600d25fd8ca74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464072/normal_601e889f465ed.pdfIn PDF document text
    • http://barefevevudan.iblogger.org/tuzuzasij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460706/normal_5fd117ab42f65.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_60051491e79f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382208/normal_6017a7db0cfca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448542/normal_601cd04890af0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460446/normal_5ffec0076bcc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464315/normal_60158f6d0f5db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486363/normal_601a016143328.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/falevi/98895274863.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/illustrated_man_movie.pdfIn PDF document text
    • http://vokerajud.epizy.com/baseline_survey_report.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BC 5332 bytes
SHA-256: dd92cb9047da12cd236b09dd9c00d00924611c79c820bbb76d7508f40ba4480c
font_01_sfnt_off0000eaca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACA 10804 bytes
SHA-256: 881d171ab47eec0423aa03e1a7b536e0feef4d94bafe008fe2a4df2efd1ce252
font_02_sfnt_off00010fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB2 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449
font_03_sfnt_off000124e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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