Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7759f50f796ae10…

MALICIOUS

PDF

80.9 KB Created: 2021-07-19 04:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8bd62e39c5275f28dfcd5f0b5a579c58 SHA-1: 56e4f891bf466e8214f0ff7d3ddfff809801dbe2 SHA-256: c7759f50f796ae1016698099dbae1a594e775790a50ceebcba8ae26605b85902
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. An external URI pointing to a potentially malicious URL was extracted from the PDF. Although the URL itself is marked as benign, its presence within a malicious PDF suggests it could be part of a phishing or malware delivery chain. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/razvivatel/yapz/~3/gPkW7oTCsL0/square?utm_term=all+my+life+2020+full+movie+free+watch+online+123movies
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f46dda70ff22042a0ff66d/1626631642755/surface_tension_lab.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee6611b1dcdf258daa4d03/1626236433102/80516046790.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f4754ca8f65e35b6e4e9fd/1626633548784/32011150357.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f024938fff8309febb4f28/1626350739521/japorezosu.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_off0000d665.bin
3bfc938b44dc223cae499230f957a904dc8b3033833f71e3b22999ee69b99138		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD665 11416 bytes
font_01_sfnt_off0000f164.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF164 16792 bytes
font_02_sfnt_off00010976.bin
c0343c9278e616aa91e1d8226d817677f9e292ccb7b51e6efc4f236c20afbd3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10976 17460 bytes

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