Malicious PDF — malware analysis report

Static analysis result for SHA-256 957e09e967db2b25…

MALICIOUS

PDF

95.1 KB Created: 2021-07-12 22:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 677241193e50e2dd7f116e0c44ce1d4f SHA-1: 7a6d344af5259f6ff704bc6e33bdf3a2dae14302 SHA-256: 957e09e967db2b2588d9d44f0878f71792097b5b54f09511a02531cd4742f8f4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains embedded URLs, suggesting a phishing attempt to lure users to malicious sites. Although no scripts were explicitly extracted, the PDF structure and detection indicate malicious intent, likely involving social engineering to compromise users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9918

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/pL_UGxDroB4/square?utm_term=larry+doby+and+jackie+robinson
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8e0f458c6623f037e9783/1625874676243/fusefemimawugujuwas.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e9268ecc7c086459270a7b/1625892494276/can_we_see_who_viewed_your_instagram_profile.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8983c7ad560129958e30e/1625856060534/warning_signs_of_a_seizure_in_a_child.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7bb096e46386ca3bedb69/1625799433209/61612914127.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8d34e2760ff79c9e924b0/1625871182611/private_school_tuition_tax_deductible.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7f92823621b4743e52445/1625815336575/jexezevusijor.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e784216544141053fe8c40/1625785377906/sisepulusovupaxapaludavub.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90ea58fb24157da6f57ca/1625886373600/andys_after_school_care.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7cda1f4d7c53d8b12b1d6/1625804193640/vusomujozu.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_off000111db.bin
8a66b259777708d7e7bfcffab4a2b56650d02ecfa737bdac4096717f9b40ee74
pdf-font-stream PDF embedded font (sfnt) at offset 0x111DB 16792 bytes
font_01_sfnt_off00013de0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13DE0 16792 bytes
font_02_sfnt_off000155f7.bin
c3c1f9b6b653d2a563d76ff9b54d2e526c5e56ea92111490fed82b0fdd9dbfbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x155F7 10652 bytes