Malicious PDF — malware analysis report

Static analysis result for SHA-256 e27e04c0489bef9f…

MALICIOUS

PDF

94.0 KB Created: 2021-07-12 22:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 42d5d58d9145dc5a3014326192829d21 SHA-1: ecf5e97802fa5d805e0fd883a1b83b55c3b9d05f SHA-256: e27e04c0489bef9fad6a7f358ec5afb88fa717c1cb4a10da3b54c91fdce400da
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of embedded URLs, despite some being marked as benign, suggests a phishing or malicious redirection attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the overall pattern points to a malicious document designed to lure users, likely via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8343

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/mHcMeCcfVl0/square?utm_term=be+more+chill+off+broadway+cast
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec82e64c0b954f9ea40bfb/1626112743091/2nd_grade_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec8e17f918372873878af8/1626115607932/subtraction_of_binary_numbers_using_2s_complement.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec921bdef1ca41d5fa4e1f/1626116635802/95537480742.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ce36cb474813b85b6f76/1625869878733/79507868975.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8365f69e16759cf79432c/1625831007685/85662548190.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8b4172b4d945990ae8900/1625863191911/paguj.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_off00010d34.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D34 16792 bytes
font_01_sfnt_off0001254b.bin
dba6229d64dbc4037fa52bd01c2d912ecc1db7a9ff98202955345dd07029e950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1254B 11028 bytes
font_02_sfnt_off00013f02.bin
deefd8e26c3908147c3ddb2acc2d87553336ffbaee01390591c5c27b90565f39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F02 17300 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.