Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15de614ae32a1d3…

MALICIOUS

PDF

74.7 KB Created: 2021-07-16 00:11:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c980b857e8a792e1dfaf4494ff741bfd SHA-1: c60ac0b62d498c9afcd5387486ee8e5d19f03edc SHA-256: e15de614ae32a1d3aaa3646235de3c1ff058827c0910bb8a5c81d308b6a5c9dc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to potentially harmful content. The PDF structure and embedded objects are consistent with common phishing or malware delivery techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7788

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/rCno-htTzZk/square?utm_term=spring+and+summer+months
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec906a58d864752e0213da/1626116202868/36985448737.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eda2afb2cb0e52868a518f/1626186415515/play_pizza_party_pickup.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f0a32ac71ec55c276cc5fc/1626383146481/ropabopopulivakulelemoxad.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_off0000c4e0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E0 16792 bytes
font_01_sfnt_off0000dcf2.bin
ee37eb9ce997dd96197b30f5863e15320db8532e8a9684d06cece41141785743
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF2 16140 bytes
font_02_sfnt_off0001062d.bin
79b0f4558ab0f34ca9af2200cb30ec9a7204359d2bb45b8bc3e9785b7b2fc456
pdf-font-stream PDF embedded font (sfnt) at offset 0x1062D 10968 bytes