Malicious PDF — malware analysis report

Static analysis result for SHA-256 810cc8481befa4b0…

MALICIOUS

PDF

76.4 KB Created: 2021-07-15 10:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c03d79d6929769db9aa578c993fd7f4b SHA-1: abb10973697a4b48eeb091994b74812c0a0e8375 SHA-256: 810cc8481befa4b0063287325dce534a1bc11047bd3ed96774b1ac73837a599b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or malware delivery attempt. The presence of embedded URLs, although many are marked as benign, suggests an attempt to lure users to external resources. The file's structure also shows duplicate object bodies, a common obfuscation technique in malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8972

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/X6hrLWyzjlw/square?utm_term=solution+of+lakhmir+singh+class+9+physics
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee24f68feeeb055d9831a9/1626219766589/modern_paddy_cultivation.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edb3531608af7c639f606b/1626190675516/5470146765.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e7ca29ed7e630439635e1d/1625803305262/pojiwadidenuruvilisotan.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60efd9441e1165054c924020/1626331460176/business_canvas_model_example.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60efd8bdfc6647025a357310/1626331325414/65654872353.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec7d7b4c0b954f9ea39ea8/1626111355862/80744698178.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_off0000c8f3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F3 16792 bytes
font_01_sfnt_off0000e105.bin
d5bd6ea59cda6cbef167df1fa1dbd0f4b205d2c3ac68e1310883008c32fe7766		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE105 16188 bytes
font_02_sfnt_off00010b10.bin
34c02a4d019db38212f1c3937c589cb210698344e0b200accf042c800082c178		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B10 11344 bytes

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