Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0d93bf71e05155…

MALICIOUS

PDF

77.3 KB Created: 2021-07-16 18:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f33f8781aafeca8993a2d27191bdf87f SHA-1: a42a0da64089ff4b17b2134e78b63dfa7fa14305 SHA-256: fd0d93bf71e05155a7fd8fb7ab001c241883b34c56b1bf03aae4f757787d9de8
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 a phishing trojan. It contains embedded URLs, suggesting it is intended to lure the user to malicious sites. While no scripts were explicitly extracted, the nature of the detection and embedded URLs points towards a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7746

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/W5vEtEh6t-A/square?utm_term=youth+track+teams+near+me
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e94994e51f1f218d6b35de/1625901460476/2008_pontiac_vibe_owners_manual.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f1213596ce9b33d73071fd/1626415413916/embodiment_of_beauty_meaning.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e91312fc46b15058279cb2/1625887506264/gesasojebeniwirepuwuboj.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ed415ac1f2f61945a1c75a/1626161498691/how_to_draw_a_honey_bee_easy.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_off0000cca9.bin
9bf3d43c69ff2d60fea42a18764982aa1fff134741e276018e64144a66367c48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA9 10532 bytes
font_01_sfnt_off0000e48a.bin
30e47b12f9e14cda6e159f3d46c247e32b63ab3912539551d6584afd286a12c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE48A 16672 bytes
font_02_sfnt_off0001100e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1100E 16792 bytes

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