Malicious PDF — malware analysis report

Static analysis result for SHA-256 e713cfcc71311ffd…

MALICIOUS

PDF

74.7 KB Created: 2021-07-13 05:39:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ab5b93456063dfd30993eef9a1cebae SHA-1: 31c99b57703e82d52b10aebb59f85fcf372aed97 SHA-256: e713cfcc71311ffddeffb599666bb763f3ee83f59ea3e3d08d05e5ca6644f6e4
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV, specifically as 'Pdf.Phishing.Trojan'. It contains embedded URLs, one of which is related to 'pdf converter software free download', suggesting a lure for users seeking such software. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate a phishing or malware distribution attempt, likely leveraging social engineering.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2593

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/ZFaGRQ6RLlg/square?utm_term=pdf+converter+software+for+windows+7+free+download
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8fcd212fb7d0b2791e055/1625881810865/home_treatment_for_hypoxia.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e927e42dabf27235549873/1625892836112/habsburg_family_today.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_off0000c645.bin
3b9862a26cbbb72ce4e7fd47ef32cf2a84ba5ae33de4fc9ac20fee599578b848		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC645 10672 bytes
font_01_sfnt_off0000df07.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF07 16792 bytes
font_02_sfnt_off0000f719.bin
9217793453abeb23ba9ce8ac55dde3af8c62c257d0cb8b97fbcd974694eb29a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF719 15556 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.