Malicious PDF — malware analysis report

Static analysis result for SHA-256 7947bbe69f354ac2…

MALICIOUS

PDF

89.3 KB Created: 2021-07-23 09:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f702f199d7cd974d41c4f1bfa9747df0 SHA-1: 63a8eb082a4909f3e34f1b28574aee8574788e03 SHA-256: 7947bbe69f354ac276cbc4ff963ee6c29c92957152d874f494ff40ee1bb9a9f3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that points to a resource that could be used to deliver a payload or conduct phishing. The PDF structure itself does not contain readable content, but the presence of an external URI heuristic suggests an attempt to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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/UkUWPC8UKDU/square?utm_term=find+long+side+of+triangle
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f6c5256466be775564ea17/1626785061874/dixurapowalikefigikejerag.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee05134c056a31b81f5426/1626211603526/mudizemegetimawakovi.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f0d577133357608f37f272/1626396023388/61491028147.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f065dc11cad82123c54fe7/1626367452648/31393979104.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee31522d09e34b729f71ce/1626222930928/noxegebuv.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e86774217a573485499ce4/1625843572823/policies_and_procedures_manual_sample_for_a_medical_office.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f163ac9b6f236119592a06/1626432428454/mom_and_daughter_quiz.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f6b8cf79394e4d05b2da92/1626781903291/56956457341.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edac2d37bfc37e3c24890c/1626188845754/after_the_boys_of_summer_are_gone.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e794721d61f435cef3d345/1625789554156/ratan_tata_date_of_birth_and_time.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f6f98e4078ea1858f7139b/1626798478546/myself_essay_for_college_students.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60fa4278cb51860d997736ad/1627013752629/idaho_drivers_license_test_answers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f8e8c6ec70443d923a7ee7/1626925254502/digize_for_heartburn.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e82d6048fdc25940445695/1625828704174/20331193748.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f1a41152a9ae35ae7c9b86/1626448913497/23065758991.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f7ee2ed0dde27ef577c56a/1626861102749/40950866784.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f73f56c3b38f1fef9632da/1626816342736/losimave.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f54940689a653fd2ae8dff/1626687809029/giverekipixakutojugi.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_off0000f7a1.bin
85a77fa954774aaa0d52c9c63a6f590e2641c738baf372fe8f3ce72a9183f5cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A1 17920 bytes
font_01_sfnt_off0001268a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1268A 16792 bytes
font_02_sfnt_off00013ea1.bin
cb95bb17446845c5170720efaaa56b0424824c189c3de0c23a3f4ddc61a647b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EA1 10504 bytes

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