Malicious PDF — malware analysis report

Static analysis result for SHA-256 80145124ea0e57b4…

MALICIOUS

PDF

82.1 KB Created: 2021-07-15 10:32:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c3be3387f28d448ff6b141dab76d5d83 SHA-1: cd1e6364fe53316196582e7e5244615747cc3d86 SHA-256: 80145124ea0e57b46d435ca08dcc56022f71637d821df01552b8f1eb964a9316
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as a phishing trojan by ClamAV. It contains multiple embedded URLs, one of which is flagged as a potential external URI. The document body is heavily obfuscated and does not provide clear user-facing content, suggesting it is designed to deliver a malicious payload or redirect users to a phishing site.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3546

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/CHqDoFjlE84/square?utm_term=convalescence+meaning+in+marathi PDF link annotation
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec84bac3fb560d26f3016f/1626113210424/24573779818.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e887f46a45ae151fb4d2c8/1625851892794/how_to_break_a_3_day_dry_fast.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec707ac8b0d544b6d5a912/1626108026996/one_more_time_one_more_chance_mp3.pdfIn PDF document text
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec84d4e94d7a30e0555662/1626113236234/49642517783.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B7 10772 bytes
SHA-256: 45a8921d903745653c10ae5b01a16380e73fddeb1c17dc86e78d28381ae552c2
font_01_sfnt_off0000f062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF062 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10874 16064 bytes
SHA-256: e3eb3a55acf1c2a71e3af48fd354240829b19e16ba6026f793205f6453ab52eb
font_03_sfnt_off00013203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13203 1824 bytes
SHA-256: 03f1c6902794decc2f8679bcc7d0a3686e9987d99c08625e42f4831900b81125

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