Malicious PDF — malware analysis report

Static analysis result for SHA-256 972766f959036997…

MALICIOUS

PDF

81.7 KB Created: 2021-07-15 16:36:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 34d28634b6a80b48cc4d22eb76886bdb SHA-1: b7f8bdffbabc38920323f2d981ab0c33b2934e5a SHA-256: 972766f959036997e5eaaa888a8c39ddcd8f293eda9cd6df884222ee837bef4d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded URLs, one of which is flagged as potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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/gPkW7oTCsL0/square?utm_term=why+is+the+oxygen+atom+of+one+water+molecule+attracted+to+the+hydrogen+atom+of+another+water+molecule
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee4715db6052518ec7254c/1626228501965/xawasumimuwurixibe.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee4e96115d504d3a878072/1626230423067/98266346101.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee9075df274736e0b00009/1626247285672/lunezewifiwilesazej.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60effae93a4e3014a1c29c64/1626340073466/tezavo.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e9177037da2614570dc84c/1625888624879/fomuvidepaselijevisipewi.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee1cdfe03b615e098bb5d6/1626217695236/crossword_puzzle_answers_app.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e928288fb24157da70538f/1625892904964/red_dead_redemption_strategy_guide.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edac2b8525735ba0d2fe8b/1626188843710/quantum_chemistry_textbook_answers.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e777d96a360c44743c8750/1625782233990/piforonusov.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8fe6b3b7e7c63344ebe2c/1625882219785/28074153382.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_off0000dbfe.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFE 16792 bytes
font_01_sfnt_off0000f410.bin
f42983fbbf51eb04480a67a356c52408d3b4bdd7d22616ba6ded350cdda682c0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF410 16524 bytes
font_02_sfnt_off00011eec.bin
7379ef0512179ad803d493b6821e7a65da29e3cb6fd2256c956fbac71e94b03e
pdf-font-stream PDF embedded font (sfnt) at offset 0x11EEC 11320 bytes