Malicious PDF — malware analysis report

Static analysis result for SHA-256 580f7f17d5c35fbe…

MALICIOUS

PDF

81.6 KB Created: 2021-07-17 16:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ae8d06769f35df91184f78a7339c863c SHA-1: b064cfadc5a70367770b6f476ec9a3942c23ecc9 SHA-256: 580f7f17d5c35fbe143b6aab94347fed324c8ee99a523c70bbc1b6b9372be9d7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains embedded URLs that likely lead to the download of further malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit vulnerabilities or trick the user into executing a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8554

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/~3/4P1vZUbBa90/square?utm_term=background+themes+for+powerpoint+presentation
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efecd8e00eb31d7cece4da/1626336472325/muguta.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f16eadb348e55d1c544c8d/1626435245947/4287075016.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e9295cf492d21a0f6b2959/1625893212346/react_js_ecommerce_website_template_free_download.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60eca89d0f7d8d50062f4e06/1626122397565/sumidutesadidexi.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7c35abab06216133735a8/1625801562380/2326325636.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_off0000d907.bin
95155fdb80b85cee69c3ca40ae13f7ceb8e242a6eec44e6a254b260ce5bdee07		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD907 17256 bytes
font_01_sfnt_off00010643.bin
87d2db6fcfcc57421d43cf4c9859c9193094291de30fe31d5a6d9e31c28eea11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10643 11352 bytes
font_02_sfnt_off000120c3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120C3 16792 bytes

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