Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7d782fcac258e0…

MALICIOUS

PDF

87.8 KB Created: 2021-07-19 15:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b657e12f469c3040d14e8670f512f931 SHA-1: a759556ab0b85c826a285c40d4c40efdaedc9d76 SHA-256: 9b7d782fcac258e058155ad61cc1f013d97168dde81bef73c2a145e2b7b4c184
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a Squarespace domain, which is likely part of a phishing lure. While no scripts were explicitly extracted, the PDF structure and the ML/ClamAV detections suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

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://feedproxy.google.com/~r/sq/ugae/~3/UkUWPC8UKDU/square?utm_term=eyepiece+microscope+function
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f01ced54c38e1eb6488adf/1626348782094/long_story_porn.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f091bce0476e6c19211b4f/1626378684875/42330423883.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee6c7f115d504d3a894274/1626238079952/security_guide_to_network_security_fundamentals_6th_edition_answers.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f141b2b238236d2333ff65/1626423730990/21212971685.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee69fcaa539923b5894c6f/1626237436519/pimate.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0a535249f775f965d5163/1626383669375/4_pics_1_word_482_answer.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f34884deec5816202ee86b/1626556548432/57475412222.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7c7e4ed7e63043963449f/1625802725156/59238574216.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f052a16e271825e9410204/1626362530156/according_to_management_consultant_peter_drucker.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f213.bin
d4db12a1e913b20a038a8a45c76c0363da54b93a3fcda7d7c914438b2d2387d7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF213 18316 bytes
font_01_sfnt_off000122dc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x122DC 16792 bytes
font_02_sfnt_off00013af3.bin
5b0e2e84d2e845d793c486dd73368252638116a6d1bf573b73a9fb14d3c67763
pdf-font-stream PDF embedded font (sfnt) at offset 0x13AF3 10632 bytes